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  • Opening Skype, Opera, OpenOffice logs me off

    - by anjanesh
    Whats common among Skype, Opera, OpenOffice in Ubuntu ? Whenever I open these applications I get logged off and shows back me the login screen. This started happening since the 10.10 upgrade. Forgot to mention : Yes, its x64.Each time I open these applications, the UI shows and then crashes. I started each app & logged the last few lines of /var/log/syslog after each crash. Looks like something to do with sound drivers ? Opera :Jan 8 09:33:20 al-ubuntu pulseaudio[11532]: pid.c: Daemon already running. Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: snd_pcm_avail_delay() returned strange values: delay 0 is less than avail 8. Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers. Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: snd_pcm_dump(): Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: Soft volume PCM Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: Control: PCM Playback Volume Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: min_dB: -51 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: max_dB: 0 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: resolution: 256 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: Its setup is: Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: stream : CAPTURE Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: access : MMAP_INTERLEAVED Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: format : S16_LE Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: subformat : STD Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: channels : 2 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: rate : 44100 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: exact rate : 44100 (44100/1) Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: msbits : 16 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: buffer_size : 88192 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: period_size : 44096 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: period_time : 999909 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: tstamp_mode : ENABLE Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: period_step : 1 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: avail_min : 87310 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: period_event : 0 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: start_threshold : -1 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: stop_threshold : 6205960286516543488 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: silence_threshold: 0 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: silence_size : 0 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: boundary : 6205960286516543488 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel' device 0 subdevice 0 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: Its setup is: Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: stream : CAPTURE Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: access : MMAP_INTERLEAVED Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: format : S16_LE Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: subformat : STD Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: channels : 2 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: rate : 44100 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: exact rate : 44100 (44100/1) Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: msbits : 16 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: buffer_size : 88192 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: period_size : 44096 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: period_time : 999909 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: tstamp_mode : ENABLE Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: period_step : 1 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: avail_min : 87310 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: period_event : 0 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: start_threshold : -1 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: stop_threshold : 6205960286516543488 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: silence_threshold: 0 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: silence_size : 0 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: boundary : 6205960286516543488 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: appl_ptr : 87320 Jan 8 09:33:21 al-ubuntu pulseaudio[11429]: alsa-util.c: hw_ptr : 87320 Jan 8 09:33:22 al-ubuntu kernel: [ 4962.078306] opera[11036]: segfault at 261 ip 0000000000000261 sp 00007fffed7cd9a8 error 14 in opera[400000+122b000] anjanesh@al-ubuntu:~$ SkypeJan 8 09:40:21 al-ubuntu pulseaudio[12602]: pid.c: Daemon already running. Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: snd_pcm_avail_delay() returned strange values: delay 0 is less than avail 8. Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers. Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: snd_pcm_dump(): Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: Soft volume PCM Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: Control: PCM Playback Volume Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: min_dB: -51 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: max_dB: 0 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: resolution: 256 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: Its setup is: Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: stream : CAPTURE Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: access : MMAP_INTERLEAVED Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: format : S16_LE Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: subformat : STD Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: channels : 2 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: rate : 44100 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: exact rate : 44100 (44100/1) Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: msbits : 16 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: buffer_size : 88192 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: period_size : 44096 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: period_time : 999909 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: tstamp_mode : ENABLE Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: period_step : 1 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: avail_min : 87310 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: period_event : 0 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: start_threshold : -1 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: stop_threshold : 6205960286516543488 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: silence_threshold: 0 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: silence_size : 0 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: boundary : 6205960286516543488 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel' device 0 subdevice 0 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: Its setup is: Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: stream : CAPTURE Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: access : MMAP_INTERLEAVED Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: format : S16_LE Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: subformat : STD Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: channels : 2 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: rate : 44100 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: exact rate : 44100 (44100/1) Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: msbits : 16 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: buffer_size : 88192 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: period_size : 44096 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: period_time : 999909 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: tstamp_mode : ENABLE Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: period_step : 1 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: avail_min : 87310 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: period_event : 0 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: start_threshold : -1 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: stop_threshold : 6205960286516543488 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: silence_threshold: 0 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: silence_size : 0 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: boundary : 6205960286516543488 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: appl_ptr : 87312 Jan 8 09:40:23 al-ubuntu pulseaudio[12485]: alsa-util.c: hw_ptr : 87312 anjanesh@al-ubuntu:~$ Open OfficeJan 8 09:43:46 al-ubuntu pulseaudio[13157]: pid.c: Daemon already running. Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: snd_pcm_avail_delay() returned strange values: delay 0 is less than avail 16. Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers. Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: snd_pcm_dump(): Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: Soft volume PCM Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: Control: PCM Playback Volume Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: min_dB: -51 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: max_dB: 0 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: resolution: 256 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: Its setup is: Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: stream : CAPTURE Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: access : MMAP_INTERLEAVED Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: format : S16_LE Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: subformat : STD Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: channels : 2 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: rate : 44100 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: exact rate : 44100 (44100/1) Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: msbits : 16 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: buffer_size : 88192 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: period_size : 44096 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: period_time : 999909 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: tstamp_mode : ENABLE Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: period_step : 1 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: avail_min : 87310 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: period_event : 0 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: start_threshold : -1 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: stop_threshold : 6205960286516543488 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: silence_threshold: 0 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: silence_size : 0 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: boundary : 6205960286516543488 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: Slave: Hardware PCM card 0 'HDA Intel' device 0 subdevice 0 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: Its setup is: Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: stream : CAPTURE Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: access : MMAP_INTERLEAVED Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: format : S16_LE Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: subformat : STD Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: channels : 2 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: rate : 44100 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: exact rate : 44100 (44100/1) Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: msbits : 16 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: buffer_size : 88192 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: period_size : 44096 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: period_time : 999909 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: tstamp_mode : ENABLE Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: period_step : 1 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: avail_min : 87310 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: period_event : 0 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: start_threshold : -1 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: stop_threshold : 6205960286516543488 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: silence_threshold: 0 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: silence_size : 0 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: boundary : 6205960286516543488 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: appl_ptr : 87320 Jan 8 09:43:48 al-ubuntu pulseaudio[13064]: alsa-util.c: hw_ptr : 87320 anjanesh@al-ubuntu:~$

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  • Convert mkv to mp4 with ffmpeg

    - by JohnS
    When I try converting mkv to mp4 using ffmpeg, the following error occurs: [ipod @ 0x16fa0a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: -2 = -2 av_interleaved_write_frame(): Invalid argument I used this command to convert the file: ffmpeg -i input.mkv -vcodec copy -acodec copy -absf aac_adtstoasc output.m4v The input file has the following characteristics: mediainfo input.mkv General Unique ID : 200459305952356554213392832683163418790 (0x96CF0ED8DB5914CBB9E18163689280A6) Complete name : input.mkv Format : Matroska Format version : Version 2 File size : 1.46 GiB Duration : 1h 5mn Overall bit rate : 3 168 Kbps Encoded date : UTC 2010-09-26 21:44:02 Writing application : mkvmerge v2.9.5 ('Tu es le seul') built on Jun 17 2009 16:28:30 Writing library : libebml v0.7.8 + libmatroska v0.8.1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Codec ID : V_MPEG4/ISO/AVC Duration : 1h 5mn Bit rate : 2 910 Kbps Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate : 25.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.126 Stream size : 1.31 GiB (90%) Writing library : x264 core 105 r1724 b02df7b Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=18 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=2910 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00 Default : Yes Forced : No Audio ID : 2 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Codec ID : A_AC3 Duration : 1h 5mn Bit rate mode : Constant Bit rate : 256 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 121 MiB (8%) Language : English Default : Yes Forced : No Being new to ffmpeg, I'm not sure what the error means or how to correct it. Thanks!

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  • Ubuntu 12.04 connected to wireless network but internet not working

    - by A.J.
    I can connect to my house's wireless network just fine, but when I'm connected I can't browse the web. Firefox starts connecting to a site and then just poops out. This doesn't happen on my roommates' computers (running Windows) or on our 3DSes, so I know it's just my laptop. I already tried sudo dhclient -r sudo dhclient sudo ifconfig eth0 down sudo ifconfig eth0 up Results of a few commands I was asked to run in comments: ping -c 2 4.2.2.2 PING 4.2.2.2 (4.2.2.2) 56(84) bytes of data. ^C --- 4.2.2.2 ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 1007ms ping -c 2 google.com PING google.com (173.194.33.38) 56(84) bytes of data. --- google.com ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 1006ms nm-tool NetworkManager Tool State: connected (global) - Device: eth0 ----------------------------------------------------------------- Type: Wired Driver: atl1c State: unavailable Default: no HW Address: 88:AE:1D:6B:4E:E7 Capabilities: Carrier Detect: yes Speed: 100 Mb/s Wired Properties Carrier: off - Device: wlan0 [JUSTICE] ----------------------------------------------------- Type: 802.11 WiFi Driver: ath9k State: connected Default: yes HW Address: 1C:65:9D:65:C6:31 Capabilities: Speed: 1 Mb/s Wireless Properties WEP Encryption: yes WPA Encryption: yes WPA2 Encryption: yes Wireless Access Points (* = current AP) HOME-9B18: Infra, 00:26:F3:53:9B:18, Freq 2412 MHz, Rate 54 Mb/s, Strength 34 WPA WPA2 cougdad48 Network: Infra, 60:33:4B:E4:C4:5D, Freq 2437 MHz, Rate 54 Mb/s, Strength 22 WPA2 cougdad48 Guest Network: Infra, 66:33:4B:E4:C4:5D, Freq 2437 MHz, Rate 54 Mb/s, Strength 20 WPA2 belkin.ade: Infra, 94:44:52:FF:8A:DE, Freq 2457 MHz, Rate 54 Mb/s, Strength 20 WPA WPA2 *JUSTICE: Infra, 00:24:01:7B:9F:7E, Freq 2462 MHz, Rate 54 Mb/s, Strength 88 WEP CenturyLink: Infra, B2:B2:DC:8E:E2:58, Freq 2462 MHz, Rate 54 Mb/s, Strength 17 WPA WPA2 IPv4 Settings: Address: 192.168.0.11 Prefix: 24 (255.255.255.0) Gateway: 192.168.0.1 DNS: 192.168.0.1 (JUSTICE is my home's network.) ping -c 2 198.168.0.1 PING 198.168.0.1 (198.168.0.1) 56(84) bytes of data. --- 198.168.0.1 ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 1007ms

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  • Solving Big Problems with Oracle R Enterprise, Part I

    - by dbayard
    Abstract: This blog post will show how we used Oracle R Enterprise to tackle a customer’s big calculation problem across a big data set. Overview: Databases are great for managing large amounts of data in a central place with rigorous enterprise-level controls.  R is great for doing advanced computations.  Sometimes you need to do advanced computations on large amounts of data, subject to rigorous enterprise-level concerns.  This blog post shows how Oracle R Enterprise enables R plus the Oracle Database enabled us to do some pretty sophisticated calculations across 1 million accounts (each with many detailed records) in minutes. The problem: A financial services customer of mine has a need to calculate the historical internal rate of return (IRR) for its customers’ portfolios.  This information is needed for customer statements and the online web application.  In the past, they had solved this with a home-grown application that pulled trade and account data out of their data warehouse and ran the calculations.  But this home-grown application was not able to do this fast enough, plus it was a challenge for them to write and maintain the code that did the IRR calculation. IRR – a problem that R is good at solving: Internal Rate of Return is an interesting calculation in that in most real-world scenarios it is impractical to calculate exactly.  Rather, IRR is a calculation where approximation techniques need to be used.  In this blog post, we will discuss calculating the “money weighted rate of return” but in the actual customer proof of concept we used R to calculate both money weighted rate of returns and time weighted rate of returns.  You can learn more about the money weighted rate of returns here: http://www.wikinvest.com/wiki/Money-weighted_return First Steps- Calculating IRR in R We will start with calculating the IRR in standalone/desktop R.  In our second post, we will show how to take this desktop R function, deploy it to an Oracle Database, and make it work at real-world scale.  The first step we did was to get some sample data.  For a historical IRR calculation, you have a balances and cash flows.  In our case, the customer provided us with several accounts worth of sample data in Microsoft Excel.      The above figure shows part of the spreadsheet of sample data.  The data provides balances and cash flows for a sample account (BMV=beginning market value. FLOW=cash flow in/out of account. EMV=ending market value). Once we had the sample spreadsheet, the next step we did was to read the Excel data into R.  This is something that R does well.  R offers multiple ways to work with spreadsheet data.  For instance, one could save the spreadsheet as a .csv file.  In our case, the customer provided a spreadsheet file containing multiple sheets where each sheet provided data for a different sample account.  To handle this easily, we took advantage of the RODBC package which allowed us to read the Excel data sheet-by-sheet without having to create individual .csv files.  We wrote ourselves a little helper function called getsheet() around the RODBC package.  Then we loaded all of the sample accounts into a data.frame called SimpleMWRRData. Writing the IRR function At this point, it was time to write the money weighted rate of return (MWRR) function itself.  The definition of MWRR is easily found on the internet or if you are old school you can look in an investment performance text book.  In the customer proof, we based our calculations off the ones defined in the The Handbook of Investment Performance: A User’s Guide by David Spaulding since this is the reference book used by the customer.  (One of the nice things we found during the course of this proof-of-concept is that by using R to write our IRR functions we could easily incorporate the specific variations and business rules of the customer into the calculation.) The key thing with calculating IRR is the need to solve a complex equation with a numerical approximation technique.  For IRR, you need to find the value of the rate of return (r) that sets the Net Present Value of all the flows in and out of the account to zero.  With R, we solve this by defining our NPV function: where bmv is the beginning market value, cf is a vector of cash flows, t is a vector of time (relative to the beginning), emv is the ending market value, and tend is the ending time. Since solving for r is a one-dimensional optimization problem, we decided to take advantage of R’s optimize method (http://stat.ethz.ch/R-manual/R-patched/library/stats/html/optimize.html). The optimize method can be used to find a minimum or maximum; to find the value of r where our npv function is closest to zero, we wrapped our npv function inside the abs function and asked optimize to find the minimum.  Here is an example of using optimize: where low and high are scalars that indicate the range to search for an answer.   To test this out, we need to set values for bmv, cf, t, emv, tend, low, and high.  We will set low and high to some reasonable defaults. For example, this account had a negative 2.2% money weighted rate of return. Enhancing and Packaging the IRR function With numerical approximation methods like optimize, sometimes you will not be able to find an answer with your initial set of inputs.  To account for this, our approach was to first try to find an answer for r within a narrow range, then if we did not find an answer, try calling optimize() again with a broader range.  See the R help page on optimize()  for more details about the search range and its algorithm. At this point, we can now write a simplified version of our MWRR function.  (Our real-world version is  more sophisticated in that it calculates rate of returns for 5 different time periods [since inception, last quarter, year-to-date, last year, year before last year] in a single invocation.  In our actual customer proof, we also defined time-weighted rate of return calculations.  The beauty of R is that it was very easy to add these enhancements and additional calculations to our IRR package.)To simplify code deployment, we then created a new package of our IRR functions and sample data.  For this blog post, we only need to include our SimpleMWRR function and our SimpleMWRRData sample data.  We created the shell of the package by calling: To turn this package skeleton into something usable, at a minimum you need to edit the SimpleMWRR.Rd and SimpleMWRRData.Rd files in the \man subdirectory.  In those files, you need to at least provide a value for the “title” section. Once that is done, you can change directory to the IRR directory and type at the command-line: The myIRR package for this blog post (which has both SimpleMWRR source and SimpleMWRRData sample data) is downloadable from here: myIRR package Testing the myIRR package Here is an example of testing our IRR function once it was converted to an installable package: Calculating IRR for All the Accounts So far, we have shown how to calculate IRR for a single account.  The real-world issue is how do you calculate IRR for all of the accounts?This is the kind of situation where we can leverage the “Split-Apply-Combine” approach (see http://www.cscs.umich.edu/~crshalizi/weblog/815.html).  Given that our sample data can fit in memory, one easy approach is to use R’s “by” function.  (Other approaches to Split-Apply-Combine such as plyr can also be used.  See http://4dpiecharts.com/2011/12/16/a-quick-primer-on-split-apply-combine-problems/). Here is an example showing the use of “by” to calculate the money weighted rate of return for each account in our sample data set.  Recap and Next Steps At this point, you’ve seen the power of R being used to calculate IRR.  There were several good things: R could easily work with the spreadsheets of sample data we were given R’s optimize() function provided a nice way to solve for IRR- it was both fast and allowed us to avoid having to code our own iterative approximation algorithm R was a convenient language to express the customer-specific variations, business-rules, and exceptions that often occur in real-world calculations- these could be easily added to our IRR functions The Split-Apply-Combine technique can be used to perform calculations of IRR for multiple accounts at once. However, there are several challenges yet to be conquered at this point in our story: The actual data that needs to be used lives in a database, not in a spreadsheet The actual data is much, much bigger- too big to fit into the normal R memory space and too big to want to move across the network The overall process needs to run fast- much faster than a single processor The actual data needs to be kept secured- another reason to not want to move it from the database and across the network And the process of calculating the IRR needs to be integrated together with other database ETL activities, so that IRR’s can be calculated as part of the data warehouse refresh processes In our next blog post in this series, we will show you how Oracle R Enterprise solved these challenges.

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  • How does the Twitter rate limit API work with multiple accounts?

    - by dfrankow
    I know there's a Rest API to check the Twitter rate limit. To summarize policy: 150 for an IP, and 150 per non-whitelisted account except for searches (which are IP only). However, my app is using Twython, authenticated, but the limit seems to decrease for both my accounts as I use it. Example: No authentication: $ wget http://api.twitter.com/1/account/rate_limit_status.xml -O - <?xml version="1.0" encoding="UTF-8"?> <hash> <hourly-limit type="integer">150</hourly-limit> <reset-time-in-seconds type="integer">1266968961</reset-time-in-seconds> <reset-time type="datetime">2010-02-23T23:49:21+00:00</reset-time> <remaining-hits type="integer">134</remaining-hits> </hash> Authentication with account #1: $ wget --user b... --password=youwish http://api.twitter.com/1/account/rate_limit_status.xml -O - <?xml version="1.0" encoding="UTF-8"?> <hash> <reset-time-in-seconds type="integer">1266968961</reset-time-in-seconds> <reset-time type="datetime">2010-02-23T23:49:21+00:00</reset-time> <remaining-hits type="integer">134</remaining-hits> <hourly-limit type="integer">150</hourly-limit> </hash> Authentication with account #2: $ wget --user d... --password=youwish http://api.twitter.com/1/account/rate_limit_status.xml -O - <?xml version="1.0" encoding="UTF-8"?> <hash> <reset-time type="datetime">2010-02-23T23:49:21+00:00</reset-time> <remaining-hits type="integer">134</remaining-hits> <hourly-limit type="integer">150</hourly-limit> <reset-time-in-seconds type="integer">1266968961</reset-time-in-seconds> </hash> You see how both accounts seem to have exactly the same rate limit info (134/150)? I only used one account in my app, so why do both accounts show decrease?

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  • Making a python script run at a set rate.

    - by Matt1024
    How can I make a python loop run at a set rate regardless of how long it takes to execute commands in the loop (providing the commands take less time to run than the loop is allowed)? How can I make this run every 0.25 seconds, for example? while True: print("OK")

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  • Is this a correct Interlocked synchronization design?

    - by Dan Bryant
    I have a system that takes Samples. I have multiple client threads in the application that are interested in these Samples, but the actual process of taking a Sample can only occur in one context. It's fast enough that it's okay for it to block the calling process until Sampling is done, but slow enough that I don't want multiple threads piling up requests. I came up with this design (stripped down to minimal details): public class Sample { private static Sample _lastSample; private static int _isSampling; public static Sample TakeSample(AutomationManager automation) { //Only start sampling if not already sampling in some other context if (Interlocked.CompareExchange(ref _isSampling, 0, 1) == 0) { try { Sample sample = new Sample(); sample.PerformSampling(automation); _lastSample = sample; } finally { //We're done sampling _isSampling = 0; } } return _lastSample; } private void PerformSampling(AutomationManager automation) { //Lots of stuff going on that shouldn't be run in more than one context at the same time } } Is this safe for use in the scenario I described?

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  • How do i call bash script function using exec function by passing parameter in php?

    - by Stan
    I have created a bash script that install magento in a cpanel. but i have a problem regarding the exec function. $function_path = Mage::getBaseDir()."/media/installer/function.sh"; exec("$function_path $db_host $db_name $db_user $db_pass $url $ad_user $ad_pass $ad_email"); This the bash shell script function.sh #!/bin/bash magento_detail $dbhost $dbname $dbuser $dbpass $url $admin_username $admin_password $admin_email function magento_detail() { stty erase '^?' echo "To install Magento, you will need a blank database ready with a user assigned to it." echo -n "Do you have all of your database information" dbinfo = "y" echo $dbinfo if [ "$dbinfo" -eq 'y' ] then echo "Database Host (usually localhost) : $dbhost " echo "Database Name : $dbname " echo "Database User : $dbuser " echo "Database Password : $dbpass " echo "Store Url : $url " echo "Admin Username : $admin_username " echo "Admin Password : $admin_password " echo "Admin Email Address : $admin_email " echo -n "Include Sample Data? (y/n) " echo sample = "y" if [ "$sample" -eq "y" ]; then echo echo "Now installing Magento with sample data..." echo echo "Downloading packages..." echo wget http://www.magentocommerce.com/downloads/assets/1.5.1.0/magento-1.5.1.0.tar.gz wget http://www.magentocommerce.com/downloads/assets/1.2.0/magento-sample-data-1.2.0.tar.gz echo echo "Extracting data..." echo tar -zxvf magento-1.5.1.0.tar.gz tar -zxvf magento-sample-data-1.2.0.tar.gz echo echo "Moving files..." echo mv magento-sample-data-1.2.0/media/* magento/media/ mv magento-sample-data-1.2.0/magento_sample_data_for_1.2.0.sql magento/data.sql mv magento/index.php magento/.htaccess ./$test1 echo echo "Setting permissions..." echo chmod o+w var var/.htaccess app/etc chmod -R o+w media echo echo "Importing sample products..." echo mysql -h $dbhost -u $dbuser -p$dbpass $dbname < data.sql echo echo "Initializing PEAR registry..." echo chmod 550 mage ./mage mage-setup . echo echo "Downloading packages..." echo echo echo "Cleaning up files..." echo rm -rf downloader/pearlib/cache/* downloader/pearlib/download/* rm -rf magento/ magento-sample-data-1.2.0/ rm -rf magento-1.5.1.0.tar.gz magento-sample-data-1.2.0.tar.gz data.sql rm -rf index.php.sample .htaccess.sample php.ini.sample LICENSE.txt STATUS.txt data.sql echo echo "Installing Magento..." echo php -f install.php --license_agreement_accepted "yes" --locale "en_US" --timezone "America/Los_Angeles" --default_currency "USD" --db_host "$dbhost" --db_name "$dbname" --db_user "$dbuser" --db_pass "$dbpass" --url "$url" --use_rewrites "yes" --use_secure "no" --secure_base_url "" --use_secure_admin "no" --admin_email "$admin_email" --admin_username "$admin_username" --admin_password "$admin_password" echo echo "Finished installing Magento" echo exit else echo "Now installing Magento without sample data..." echo echo "Downloading packages..." echo wget http://www.magentocommerce.com/downloads/assets/1.5.1.0/magento-1.5.1.0.tar.gz echo echo "Extracting data..." echo tar -zxvf magento-1.5.1.0.tar.gz echo echo "Moving files..." echo mv magento/* magento/.htaccess . echo echo "Setting permissions..." echo chmod o+w var var/.htaccess app/etc chmod -R o+w media echo echo "Initializing PEAR registry..." echo chmod 550 mage ./mage mage-setup . echo echo "Downloading packages..." echo echo echo "Cleaning up files..." echo rm -rf downloader/pearlib/cache/* downloader/pearlib/download/* rm -rf magento/ magento-1.5.1.0.tar.gz rm -rf index.php.sample .htaccess.sample php.ini.sample LICENSE.txt STATUS.txt echo echo "Installing Magento..." echo php -f install.php --license_agreement_accepted "yes" --locale "en_US" --timezone "America/Los_Angeles" --default_currency "USD" --db_host "$dbhost" --db_name "$dbname" --db_user "$dbuser" --db_pass "$dbpass" --url "$url" --use_rewrites "yes" --use_secure "no" --secure_base_url "" --use_secure_admin "no" --admin_email "$admin_email" --admin_username "$admin_username" --admin_password "$admin_password" echo echo "Finished installing Magento else part" exit fi else echo "Please setup a database first. Don't forget to assign a database user!" exit fi }` when i run this exec command,at that time it calls bash script function magento_installer() which contains arguments $db_host $db_name $db_user $db_pass $url $ad_user $ad_pass $ad_email. above arguments i'll pass in exec command to call magento_installer() function of bash script. so, is it right way of calling a bash script function? It directly goes to the last step of if condition and prints "Please setup a database first. Don't forget to assign a database user!". It cant enter it in if condition and directly goes to else condition. so please help me?

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  • Why does this code sample produce a memory leak?

    - by citronas
    In the university we were given the following code sample and we were being told, that there is a memory leak when running this code. The sample should demonstrate that this is a situation where the garbage collector can't work. As far as my object oriented programming goes, the only codeline able to create a memory leak would be items=Arrays.copyOf(items,2 * size+1); The documentation says, that the elements are copied. Does that mean the reference is copied (and therefore another entry on the heap is created) or the object itself is being copied? As far as I know, Object and therefore Object[] are implemented as a reference type. So assigning a new value to 'items' would allow the garbage collector to find that the old 'item' is no longer referenced and can therefore be collected. In my eyes, this the codesample does not produce a memory leak. Could somebody prove me wrong? =) import java.util.Arrays; public class Foo { private Object[] items; private int size=0; private static final int ISIZE=10; public Foo() { items= new Object[ISIZE]; } public void push(final Object o){ checkSize(); items[size++]=o; } public Object pop(){ if (size==0) throw new ///... return items[--size]; } private void checkSize(){ if (items.length==size){ items=Arrays.copyOf(items,2 * size+1); } } }

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  • Can anyone give me a sample java socket programming for doing a peer to peer for 3 systems?

    - by Sadesh Kumar N
    I am doing an university project. I need some sample programs on peer to peer programs in java socket programming. Every where people are telling to add a server socket in the client program. I am in a confusion. Can a single program having server socket and client socket will do or i have to create two programs of one initiating a system and another peer program running thrice to solve the problem. or i need to create three programs for three peer systems. I am not clear on the architecture of building peer to peer programs using java sockets. Can some one help me giving a simple program on how to create a peer to peer connection between three systems. I know how to do a socket program for client server model and clear on the concept. But creating a peer to peer architecture sounds complex for me to understand. I also referred this thread. developing peer to peer in java The person commented second says" To make peer2peer app each client opens server socket too. When client A wishes to connect to client B it just connects to its socket. " Need some more sample and an explanation on how peer to peer java socket program works I dont want any external api like jxta to do this task. I need a clear picture on how it works alone with an example.

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  • select query related problem

    - by user222585
    i have interest rate and amount in a table where interest rate are ranged in different values like 4.5,4.6,5.2,5.6 etc. i want to get sum of amounts classified by interest rate where interest rate will be separated by .25. for example all amount having interest rate 1.25,1.3,1.4 will be in one group and 1.5,1.67,1.9 will be in another group how can i write the query?

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  • Why is my class worse than the hierarchy of classes in the book (beginner OOP)?

    - by aditya menon
    I am reading this book. The author is trying to model a lesson in a college. The goal is to output the Lesson Type (Lecture or Seminar), and the Charges for the lesson depending on whether it is a hourly or fixed price lesson. So the output should be: lesson charge 20. Charge type: hourly rate. lesson type seminar. lesson charge 30. Charge type: fixed rate. lesson type lecture. When the input is as follows: $lessons[] = new Lesson('hourly rate', 4, 'seminar'); $lessons[] = new Lesson('fixed rate', null, 'lecture'); I wrote this: class Lesson { private $chargeType; private $duration; private $lessonType; public function __construct($chargeType, $duration, $lessonType) { $this->chargeType = $chargeType; $this->duration = $duration; $this->lessonType = $lessonType; } public function getChargeType() { return $this->getChargeType; } public function getLessonType() { return $this->getLessonType; } public function cost() { if($this->chargeType == 'fixed rate') { return "30"; } else { return $this->duration * 5; } } } $lessons[] = new Lesson('hourly rate', 4, 'seminar'); $lessons[] = new Lesson('fixed rate', null, 'lecture'); foreach($lessons as $lesson) { print "lesson charge {$lesson->cost()}."; print " Charge type: {$lesson->getChargeType()}."; print " lesson type {$lesson->getLessonType()}."; print "<br />"; } But according to the book, I am wrong (I am pretty sure I am, too). The author gave a large hierarchy of classes as the solution instead. In a previous chapter, the author stated the following 'four signposts' as the time when I should consider changing my class structure: Code Duplication The Class Who Knew Too Much About His Context The Jack of All Trades - Classes that try to do many things Conditional Statements The only problem I can see is Conditional Statements, and that too in a vague manner - so why refactor this? What problems do you think might arise in the future that I have not foreseen?

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  • What is the cheapest non-colocation way to serve about 10 static files at a rate of 100 megabits per

    - by Mark Maunder
    I've looked at Amazon S3 and it costs roughly $4746 per month for 100 megabits/s (which translates into 31,640 Gigabytes of data transferred. That's at a rate of $0.15 per gig.) I haven't found a cheaper "cloud" option. I'm curious if there's any other cloud hosting option out there cheaper than S3. Uptime is not an issue because I can build failover for most things into the browser. e.g. I can use javascript to say "if the image didn't load then go to this other URL instead." FYI I'm currently using a colocation facility which is about 30% cheaper than S3 and I'm familiar with colo prices - so this question is really about "cloud" services and by that I mean services where I don't have to worry about the infrastructure.

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  • What is a good sample solrconfig.xml for django-haystack?

    - by Danner
    I am building out a solr instance for django, but the example provided from solr is super verbose, with many things that are not relevant to haystack. A sample with spelling suggestions, morelikethis, and faceting, without the extra stuff that haystack doesn't use would go a long way to helping me understand what is needed and what isn't.

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  • Is there any good (eazy, small) sample of working with google openid? (php)

    - by Ole Jak
    Is there any good (eazy to understend, small - not lotof code lines) sample of working with google openid? (php) - What I need is to see how to get users name from google openId ; a good way of how to integrate openid into my current users DB (tooday in DB I have table user with name and pass)? and how to get any Idea about if useris currently loged in from this computer with openId?

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  • can some one give me a sample gzip code for htaccess?

    - by Haroldo
    I'm keen to get started experimenting with gzip, but like i used to find php.net when i first started learning php, the apache documentation confuses me a bit. http://httpd.apache.org/docs/2.0/mod/mod_deflate.html I'd really appreciate a sample htaccess file to have a look at if anyone's got one? Also are there things which should be changed in the htconf file instead of htaccess if I'm enabling gzipping server-wide? Sorry i'm a newb with apache!

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  • How to design the application to conform to the n-tier architecture? (Winform sample in .net with li

    - by AlexRednic
    Rather a simple question. But the implications are vast. Over the last few weeks I've been reading a lot of material about n-tier architecture and it's implementation in the .NET world. The problem is I couldn't find a relevant sample for Winforms with Linq (linq is the way to go for BLL right?). How did you guys manage to grasp the n-tier concept? Books, articles, relevant samples etc.

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