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• Ubuntu doesn't start and I can't login [migrated]

  - by Meph00

  My ubuntu 13.04 doesn't boot anymore. Eternal black screen. If I press ALT+CTRL+F1 I see that it's stucked on "Checking battery state [OK]." I'd like to try to go with sudo apt-get install gdm but I can't login on terminal tty2, tty3 etc. They correctly ask for my nickname, then they make me wait a lot, ask for password and make me wait again. After a lot of time (... a lot) the best I could achieve was visualizing "Documentantion https://help.ubuntu.com". I can never reach the point where I can give commands. Plus, during the long pauses, every 2 minutes it gives a messagge like this: INFO: task XXX blocked for more than 120 seconds. Any suggestion? Sorry for my bad english and thanks everyone for the attention.

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• What are the essential considerations for setting up systems in a location with unreliable power?

  - by dunxd

  I deal with a lot of remote offices located in parts of the world where the local grid power supply is unreliable. Power can go off anytime with no warning, with outages ranging from minutes to days Power fluctuation is wild, with spikes and brown outs Currently the offices will have some or all of the following: A generator, with an inverter, or some sort of manual switch A big UPS or battery array connecting a number of devices Several smaller APC UPS with computers attached Low cost Voltage Regulators sometimes connected between mains and UPS or device. I know that each of these things needs to be appropriately rated for the equipment to which it is connected (although I am not sure how to calculate the correct rating). The offices will generally have the following equipment (in varying quantities): some sort of internet connection device (VSAT router, ADSL modem, WiMax router) Cisco ASA 5505 firewall a bunch of PCs printers one server I don't seek to replace the advice of an electrician, but in some of these locations they only answer the questions you ask them, so I need to make sure I have enough understanding of the essentials to protect equipment from damage, and possibly get through some power cuts.

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• Why does my iTunes use so much CPU time?

  - by bikesandcode

  I have a roughly 2 year old Macbook (10.5). I have iTunes 10. When iTunes is playing MP3s, I see CPU usage of the iTunes process in the system monitor ranging from 65%-75%. When I pause the music, I see CPU usage of about 65%-75%. I do not have any visualisations going, to my knowledge I have not turned on any CPU destroying features, my music library isn't tiny, but it's hardly huge (3GB). This is mildly annoying when I'm plugged into the wall as I only have slightly longer compile times, but if I am out and about, this is a major drain on the battery. Using VLC I see CPU loads of ~= 10% at the most when listening to music and generally lower. What the heck is iTunes doing?

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• ASUS P5B Plus motherboard - no any drives found - how to restore RAID array?

  - by Moha

  We have a small server machine with an ASUS P5B Plus motherboard and 4 SATA HDDs. The HDDs were configured in a RAID10 array. Up until now, everything worked fine, but now the system doesn't recognize the drives. BIOS is set to RAID, jMicron controller is set to RAID, yet I can't see any of the drives in the BIOS setup, and jMicron BIOS tells me "no any drives found" The HDDs all spin up, I hear no clicking sounds or anything that would suggest HDD error. I did a search on this problem and replaced the SATA cables as suggested, but nothing's changed. What I have in mind is checking the CMOS battery and resetting the BIOS to use IDE mode, but I don't know if it will ruin the RAID system on the HDDs. It is not a critical server and there's only one database running on it (which I have backup of), but I don't want to setup the server from scratch if not necessary. What should I try to restore the RAID array and put the server back to working order?

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• Laptop Brightness in Gnome and /proc - Thinkpad W510

  - by hakre

  I can set the brightness of my laptop screen already via /proc. I can read and change the value. Now I've set the value to 33 and then I went into gnome power management and enabled the option that it should reduce the backlight brightness being on battery. That works, the screen gets darker. If I now read out the current setting from /proc it still says it's 33. So I assume that there is another node in /proc to be used to control the brightness. The node I use so far is: /proc/acpi/video/VID/LCD0/brightness

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• Toshiba laptop only shows black screen with mouse pointer after starting up

  - by BubblySue

  I only see black screen after the startup. It just shows the logo and the status bar upon start, then it goes black screen with moveable cursor. I tried alt+ctrl+del, but it doesn't work. I pressed shift 5 times and it makes a sound. I already removed battery and restarted it, but still the same. I can go to safe mode and scanned thru there. Still, desktop won't show up. Don't know what else to check?

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• Benefits of a RAID BBU in addition to a double UPS + PS system

  - by Wikser

  Today I roughly measured the benefits of enabling write-back on the RAID controller on a server at work. It got no RAID battery-backup-unit (BBU) so the write-cache is currently disabled. As the server is not used to capacity (by far), the results in most test were spectacular, e.g.: Database CRUD: before 35s, after 4s Saving a 1MB Excel file: before: 20s (!), after: 0.5s Of course having a BBU is always recommended, but what are the main benefits of installing a BBU to a system, which got redundant power supplies and is attached to UPSs? Does this depend on the type of the system (database, file, terminal)? What is a realistic fail scenario which could be prevented by a BBU? Thanks in advance!

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• Deactivate GPU and use IGP

  - by squelos

  I am having some trouble with my Sony Vaio SVE1511W1e laptop. It has an ATI Radeon and the i5 has an IGP (i5 2450m). I don't often use my GPU, and the IGP would be just enough for most usage I do. Therefore, in order to improve the battery life, I wish to deactivate the GPU and use only the IGP. The problem is that my BIOS doesnt allow me to do so. But I believe it is possible to deactivate the GPU 'programatically'. I'm running Debian Wheezy on the 3.2.0.4 AMD64 kernel. The first problem I'm running into is that when I run lspci, my IGP doesnt show up. Could this be because im lacking a kernel module? (I chose a targeted installation). What are the solutions to deactivating a GPU and using an IGP on a Linux System such as debian?

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• Laptop Toshiba Satelite M300 screen is completely blank.

  - by Nadia

  Hi, My laptop Toshiba satelite M300 Laptop screen is completely blacked out. It powers up and appears to be running but the screen is blank. I've taken battery pack off and back on again. Before the screen was blacked out, it used to flicker a bit. Also before it blacked out i was having problems with the internet and I was on phone to Internet provider who took me through steps to take my laptop back to a future date where it was operational. It then worked properly for a few days but then switched it on and screen was blank. It's more then a year old so out of warranty. Any suggestions on whether I should pay the $300 bucks to see if they can fix it?

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• Systray stretching out for no reason.

  - by MrStatic

  I just restored my Windows install back to a previous state with Macrium. For some odd reason it is now stretching out my systray up to halfway across my taskbar. Any ideas why? No it did not do this 6 months ago when I took the image or anytime after that when I was using it. This is in Windows 7x64. The blank area seems to be filled with blank icons because if I place the mouse anywhere in the blank area the systray will slide over by about 1 icon's width. The missing icon between the battery and the volume is I assume my network icon. Not sure why that is missing as well.

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• Lenovo G500 Re-booting failed

  - by Sune

  I have a Lenovo G500. Yesterday it asked me to reboot the system. I did. Now it wont come back on. I have tried everything I read online like taking out the battery and holding the power button in for 20 seconds, then switching on the pc with only the ac adapter plugged in. I still only see the backlight of the pc, nothing else. I also tried to hold in the Fn key and tried all other F keys (F2, F12, etc.) I also pressed that little button next to the power button, but nothing is responding. Please help.

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• Alternative to Rhythmbox that's light on CPU.

  - by D Connors

  I'm running Ubuntu Lucid on my netbook, and I like listening to music while doing other stuff. Problem is: Rhythmbox is constantly consuming 7-9% of my CPU while it's playing. Now, 9% might not seem like much, but it's more than double the sum of all other processes, and it's a battery killer. Now, I know that any music player will be active (not idle) while playing, and thus will consume more CPU power than idle processes. But I'd still like to know if there's a good music player for Ubuntu that's light on CPU.

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• Computer hanged in the middle of bios flashing process

  - by Stalker

  I have a laptop: Toshiba Satellite c660-17j, today I decided to update BIOS. I've downloaded bios updater from manufacturer's web site, and in the middle of flashing process computer hanged. I was waiting more than 30 minutes, but nothing was changed on the screen, i've tryed to PRESS MORE BUTTONS, but there were no reactions, so i've turned it off by removing battery (all other methods failed, even pressing power button for ~10 secs). After that computer can't start. I understand, that there's MESS in BIOS chip, and it's possible to re-flash it with hardware programmer, but I don't have it. I remember, that on some PCs (even on my eeepc) there was possibility to re-flash bios by inserting usb flash-disk (with .dat file on it, which contained BIOS), and power on PC, while holding some keys combination, then PC was switching to BIOS programming mode and re-flashed BIOS, after that it was possible to boot up normaly. Is there a way to recover computer without hardware programming BIOS chip? p.s. sorry for my english.

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• HP Pavillion dv6 laptop - 15 beeps on startup and a black screen?

  - by dunc

  Usual story - girlfriend's step-brother's laptop is broken. I don't know a huge amount about what occurred before it broke, but I do know the following: When you try to turn the laptop on, it beeps 15 times exactly. The screen remains black. The LED on the Caps Lock key flashes continuously. If left on, the laptop never boots - as far as I can see. If left on, on a stable surface with decent ventilation for a relatively short period of time, the laptop (below keyboard, but not where the RAM/HDD are) gets very hot. I've tried doing what most websites appear to recommend for similar problems, which is to disconnect AC and battery then hold the power button down for a minute before reconnecting the AC and trying to turn the laptop on - no difference. EDIT I've also tried re-seating the RAM, to no avail. Any ideas? Thanks in advance,

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• Windows Task Scheduler won't let me uncheck "Wake the computer" option for a backup task

  - by KdawgUD

  I have a problem with my windows 7 laptop automatically waking after I put it to sleep and then I find it later with the battery drained. I tracked down the culprit using the "powercfg -lastwake" command to be a Backup task in the "Windows Server" section of the task scheduler. I have tried unchecking the "Wake the computer to run this task" checkbox for this task, but after I do this and reboot, the box is always rechecked again. How can I make this setting persist? I have full admin rights to this laptop, but it is on a domain. Edit: I looked into the domain policy settings as suggested by Dave below and did not find any policies related to scheduled task settings. Any other ideas?

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• Missing files when Windows 7 returns from hibernate w/ dual boot

  - by Arthur N

  I have a dual-boot setup with Ubuntu (lucid) and Windows 7. I have the Windows file system shared on Ubuntu through Samba. Occasionally, I am working on Windows and my machine will go into hibernate (i.e. when the battery level is critical). By default, my GRUB settings boot me into Ubuntu. So when I get back to my PC, sometimes I just hop into Ubuntu instead of going back to Windows. However, if I write any files to the Windows file system during that Ubuntu session, the next time I do go back to Windows (which resumes from hibernate), those files are missing. Obviously, the state of the actual file system and the hibernate snapshot become out of sync, and Windows chooses the hibernate snapshot, overriding any changes I may have made thru Ubuntu. For now, I've disabled the hibernate option in the Windows power settings, but is there any utility I can use to get back some of those missing files?

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• Missing files when Windows 7 returns from hibernate w/ dual boot

  - by Arthur N

  I have a dual-boot setup with Ubuntu (lucid) and Windows 7. I have the Windows file system shared on Ubuntu through Samba. Occasionally, I am working on Windows and my machine will go into hibernate (i.e. when the battery level is critical). By default, my GRUB settings boot me into Ubuntu. So when I get back to my PC, sometimes I just hop into Ubuntu instead of going back to Windows. However, if I write any files to the Windows file system during that Ubuntu session, the next time I do go back to Windows (which resumes from hibernate), those files are missing. Obviously, the state of the actual file system and the hibernate snapshot become out of sync, and Windows chooses the hibernate snapshot, overriding any changes I may have made thru Ubuntu. For now, I've disabled the hibernate option in the Windows power settings, but is there any utility I can use to get back some of those missing files?

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• How to fix Asus Eee PC 900 startup issues after failure?

  - by EBrown

  My Asus Eee PC 900 shows no signs of life. I push the power button and get no response from anything. No lights, no power, no boot-up screen. It has been like this since I received it from a friend. I asked her what happened and she said that smoke came from the keyboard, it shut down and hasnt turned on since. I have tried removing and cleaning the RAM, the computer charger still connects and works, but the battery receives no charge and the computer won't power on. Any ideas as to what is going on?

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• Automatically changing a power profile when a laptop (un)docks?

  - by Dan

  I'm looking for a way to automatically change what happens when I close my laptop's lid depending on if it's in its docking station or not. In an idea world, the on-close behavior would be nothing (when docked) and sleep (when un-docked), but there only seems to be options for behavior when plugged-in and when on battery (when it's plugged in but not docked, I'd like it to sleep when closed). My initial idea would be to create a new power profile with this behavior, but I can't find a way to have it switch when docked (or for the power system to take its docked status into account at all). Any idea?

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• How can I repair a Windows 7 Bootloader without a Window 7 Disc?

  - by Solignis

  I have a bit of a problem, I got my boss's laptop next to me and it won't boot. He told me it had hard crashed so he... you are going to love this... removed the battery. So when it put it back in and turned on the machine it gets past POST ("The Toshiba Screen") but I just get a flashing white prompt then it disappears and sits there. I don't have the original CDs. What can I do? I do have an Ubuntu CD and a few other Linux CDs like Gparted and Clonezilla. Is there anything I can do?

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• Lightest way to run Google Hangouts Chrome app on Mac

  - by jadengore

  I recently transitioned to Safari because I'm really tired of how Chrome hogs memory and drains my battery like crazy. The only thing that has been keeping the Chrome icon open is the Hangouts plugin. Basically, I am looking for the lightest way to run Hangouts on my Mac. By light, I mean the least amount of RAM usage, and preferably a way to do it without Chrome open/light version of Chrome that only opens extensions. Any suggestions? EDIT: Another thing I noticed was that Hangouts ignores your default browser if links are sent to you by chat, and when clicked they open in Chrome. My question doesn't relate to this at all, but I found it interesting...

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• How can I re-program/flash a backup of the bios?

  - by user285705

  I have some computers that have a particular bios setting that keeps everything running smoothly. The setting is not the default setting for the motherboard. So, when the CMOS battery dies, the setting is erased and causes the user problems. How can I backup the bios and settings I have now, and flash that file onto my entire stock of computers? I have attempted to use awdflash to backup my bios and then attempt to write that backup to the ROM chip, but I keep getting an error. It tells me that my file number doesn't match the system, or something like that. Basically, the file is incompatible with the chip. But I just backed it up from that chip. If anyone can shed some light on this for me it would be helpful.

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• Laptop wont start after BIOS update

  - by Maven

  I have a HP Probook 4540s i recently update its BIOS from HP's site after the installation the notebook re started but since after that there is no display i waited for an hour until the battery ran off after when i plugged in its same: Capslock is contunously blinking Fan is running faster than the usual speed i can tell this from the sound And no display i waited for more than hour for any response but no gain. Searched Internet and find out that alot people fails to update their BIOS in HP laptop i dont know why official HP sites has such updates even avaialble. Is there a way i can reset the BIOS, Hard reset, through USB of something i have another PC over which i can download anything if its required? Can anyone please help.

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• USB 3.0 hub; what can it power?

  - by pouzzler

  I own an Asus UX31A laptop, equipped with 2 USB 3.0 ports. I would like to connect several USB devices to one of these ports, using a USB 3.0 hub. 1) Am I correct in assuming the Asus "USB Charger+" commercial blurb corresponds to the USB 3.0 standard "Battery Charging Specification 1.2", and furthermore inferring that the laptop can deliver 1.5A through a USB port? 2) Does a powered external USB 3.0 hard drive draw on the USB power lines? 3) I would like to connect the aforementionned drive, an android phone, and a 200mA rated optical mouse to an unpowered USB 3.0 hub, itself plugged into the laptop. Should my above assumptions be false, would this setup be able to power all three devices? Thanks to the usb guru who'll settle my fears to rest. Best regards, Sébastien

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• Windows 8 won't load as it has to

  - by MichaelHefner

  I have successfully installed Windows 8 about eight months ago, and all went well. Only the last change I made ??is to set Startmenu8, to get a more normal for the Windows look. Yesterday, my computer screen went dark blue and the mouse does not seem to work. I changed the battery and reboot. But all I get is my desktop, taskbar, and not ikony.Programmy not appear at the bottom, but do not open the maximum so I can not use them. I have a Dell desktop and run the diagnostics on the F12 at startup. All right in line with this. I want to return to the previous item, but can not get in Windows, to do it. Any suggestions gratefully received.

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