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Dual NVidia graphics cards in Ubuntu / xorg.conf mania

- by John Zwinck

I have two NVidia graphics cards: Quadro NVS 295 (PCI Express, dual DisplayPort outputs) GeForce FX 5200 (PCI, DVI and VGA outputs) I have three identical monitors, two on DisplayPort and one on DVI. I'm on Ubuntu Hardy (and cannot currently dist-upgrade for separate reasons). I use the "nvidia" driver. What's new is the GeForce card and the third monitor. I currently have the dual DisplayPort monitors working fine. Here are the display-related parts of my xorg.conf: Section "ServerLayout" Identifier "Default Layout" Screen "PCI-Express Screen" 0 0 # adding this makes X fail to start: Screen "PCI Screen" 0 Inputdevice "Generic Keyboard" Inputdevice "Configured Mouse" EndSection Section "Module" Load "glx" # not sure why/if this is needed EndSection Section "Monitor" Identifier "DELL 2408WFP" Option "DPMS" EndSection Section "Device" Identifier "NVIDIA Quadro NVS 295" Driver "nvidia" Option "RenderAccel" "true" Screen 0 BusID "PCI:2:0:0" EndSection Section "Device" Identifier "NVIDIA GeForce FX 5200" Driver "nvidia" Option "RenderAccel" "true" Screen 1 BusID "PCI:6:4:0" EndSection Section "Screen" Identifier "PCI-Express Screen" Device "NVIDIA Quadro NVS 295" Monitor "DELL 2408WFP" Defaultdepth 24 Option "TwinView" "True" Option "UseEdidFreqs" "True" Option "MetaModes" "1920x1200 +0+1200, 1920x1200 +0+0" EndSection Section "Screen" Identifier "PCI Screen" Device "NVIDIA GeForce FX 5200" Monitor "DELL 2408WFP" Defaultdepth 24 Option "TwinView" "True" Option "UseEdidFreqs" "True" Option "MetaModes" "1920x1200 +0+0" EndSection I use nvidia-settings to configure my monitors, and it does not show the second GPU. lspci, though, shows: 02:00.0 VGA compatible controller: nVidia Corporation Unknown device 06fd 06:04.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] Which is where I got the BusID settings for the two devices (when I just had one device, I didn't have any BusID listed...and adding the BusID hasn't broken anything). What am I missing? How can I make nvidia-settings show my second GPU so I can then configure its monitor?

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Configuring three monitors with two Radeon X1600/X1650 graphics cards under Ubuntu

- by cpm

I have three SyncMaster 932a monitors I want to use with two Radeon X1600/X1650 cards under Linux. I am running X.org X Server 1.6.0, as provided by Ubuntu's Wubi installer. After turning off mirroring, I ended up with this xorg.conf: Section "Monitor" Identifier "Configured Monitor" EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" SubSection "Display" Virtual 2560 1024 EndSubSection EndSection Section "Device" Identifier "Configured Video Device" EndSection The left monitor had a menu bar and a task bar, the center monitor was just desktop, and windows would maximize to the current monitor. The third monitor and second graphics card weren't being used at all. Then I changed my configuration to manually specify each card with their PCI bus: Section "ServerLayout" Identifier "TheLayout" Screen 0 "Radeon Screen 1" Screen 1 "Radeon Screen 2" RightOf "Radeon Screen 1" EndSection Section "Screen" Identifier "Radeon Screen 1" Monitor "Configured Monitor" Device "Radeon the First" SubSection "Display" Virtual 2560 1024 EndSubSection EndSection Section "Screen" Identifier "Radeon Screen 2" Monitor "Configured Monitor" Device "Radeon the Second" EndSection Section "Device" Identifier "Radeon the First" Driver "radeon" BusID "PCI:1:0:0" EndSection Section "Device" Identifier "Radeon the Second" Driver "radeon" BusID "PCI:2:0:0" EndSection Section "Monitor" Identifier "Configured Monitor" EndSection Now both the left and right monitors have task bars and menu bars. Windows cannot be dragged from the first two monitors to the third monitor. Also, maximizing in the left or center window fills both monitors. I also tried adding Option "Xinerama" "true" to the ServerLayout section. X11 wasn't able to start up. I want to: Allow moving windows along all three monitors. Maximizing only fills the current monitor. Either have menu/task bars on only the left monitor or all three monitors How can I make this possible?

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Configuring three monitors with two Radeon X1600/X1650 graphics cards under Ubuntu

- by cpm

I have three SyncMaster 932a monitors I want to use with two Radeon X1600/X1650 cards under Linux. I am running X.org X Server 1.6.0, as provided by Ubuntu's Wubi installer. After turning off mirroring, I ended up with this xorg.conf: Section "Monitor" Identifier "Configured Monitor" EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" SubSection "Display" Virtual 2560 1024 EndSubSection EndSection Section "Device" Identifier "Configured Video Device" EndSection The left monitor had a menu bar and a task bar, the center monitor was just desktop, and windows would maximize to the current monitor. The third monitor and second graphics card weren't being used at all. Then I changed my configuration to manually specify each card with their PCI bus: Section "ServerLayout" Identifier "TheLayout" Screen 0 "Radeon Screen 1" Screen 1 "Radeon Screen 2" RightOf "Radeon Screen 1" EndSection Section "Screen" Identifier "Radeon Screen 1" Monitor "Configured Monitor" Device "Radeon the First" SubSection "Display" Virtual 2560 1024 EndSubSection EndSection Section "Screen" Identifier "Radeon Screen 2" Monitor "Configured Monitor" Device "Radeon the Second" EndSection Section "Device" Identifier "Radeon the First" Driver "radeon" BusID "PCI:1:0:0" EndSection Section "Device" Identifier "Radeon the Second" Driver "radeon" BusID "PCI:2:0:0" EndSection Section "Monitor" Identifier "Configured Monitor" EndSection Now both the left and right monitors have task bars and menu bars. Windows cannot be dragged from the first two monitors to the third monitor. Also, maximizing in the left or center window fills both monitors. I also tried adding Option "Xinerama" "true" to the ServerLayout section. X11 wasn't able to start up. I want to: Allow moving windows along all three monitors. Maximizing only fills the current monitor. Either have menu/task bars on only the left monitor or all three monitors How can I make this possible?

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Multiple Video Cards - Stuttering

- by jstawski

I have two video cards: - XFX PVT84JUDD3 GeForce 8600GT XXX 256MB 128-bit GDDR3 PCI Express x16 SLI Supported Video Card - EVGA 256-P1-N399-LX GeForce 6200 256MB 64-bit GDDR2 PCI Video Card both running the same set of drivers on Windows 7 64-bit. When I work with 2 monitors connected to the 8600GT card everything works smoothly. When I connect the third one to the 6200 then Windows works well and all of a suddon the screens turns black for up to 5 minutes. Then it goes back and at some random interval it goes black again. I can still see the pointer and hit CTRL+ALT+DEL and see the menu to log off, bring the task manager, etc. I've tried changing the 6200 to another PCI slot and the error persists. I've tried connecting 2 monitors only one to each card, same problem. Tried swapping them, mixed and matched the monitors to see if it was a problem with the monitor and my conclusion was that it is not the monitor. The problem also occurred with Vista 64 as well. What could be generating this problem? Can it be the fact that they are different interfaces? Maybe the Motherboard? Should I change something on the BIOS? What do you guys think?

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Draggable cards (touch enumeration) issue

- by glitch

I'm trying to let a player tap, drag and release a card from a fanned stack on the screen to a 4x4 field on the board. My cards are instantiated from a custom class that inherits from the UIImageView class. I started with the Touches sample app, and I modified the event handlers for touches to iterate over my player's card hand instead of the 3 squares the sample app allows you to move on screen. Everything works, until that is, I move the card I'm dragging near another card. I'm really drawing a blank here for the logic to get the cards to behave properly. Here's my code: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { NSUInteger numTaps = [[touches anyObject] tapCount]; if(numTaps = 1) { for (UITouch *touch in touches) { [self dispatchFirstTouchAtPoint:[touch locationInView: self.boardCardView] forEvent:nil]; } } } -(void) dispatchFirstTouchAtPoint:(CGPoint)touchPoint forEvent:(UIEvent *)event { for (int i = 0; i<5; i++) { UIImageView *touchedCard = boardBuffer[i]; if (CGRectContainsPoint([touchedCard frame], touchPoint)) { [self animateFirstTouchAtPoint:touchPoint forView:touchedCard]; } } } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { NSUInteger touchCount = 0; for (UITouch *touch in touches){ [self dispatchTouchEvent:[touch view] toPosition:[touch locationInView:self.boardCardView]]; touchCount++; } } My questions are: How do I get the touch logic to disallow other cards from being picked up by a dragging finger? Is there anyway I can only enumerate the objects that are directly below a player's finger and explicitly disable other objects from responding? Thanks!

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Operative systems on SD cards

- by HisDudeness

I was getting some wild ideas the last days, like putting some operative systems into SD cards rather than on my hard drive. I'll go further into details now and explain what lead me to consider this probably abominable decision. I am on a laptop (that means I have a native SD-card reader) which is currently running a cross-distro setup, with a bunch of Linux systems (placed in dedicated ext4 logical partitions into a huge extended one) regulated by an unique GRUB. Since today, my laptop haven't even seen any Windows system with binoculars. I was thinking about placing all the os part of my setup into a Secure Digital to save all my 500 Gb Hard Drive for documents, music, videos and so on, and being able to just remove the SD and boot my system into another computer too, as well as having the possibility of booting other systems into mine by just plugging in another SD, without having to keep it constantly placed in my PC. Also, in the remote case in the near future I just wanted to boot Windows 8 in it, I read it causes major boot incompatibility issues with other systems by needing a digital signature in order for them to start. By having it in a removable drive, I could just get rid of it when I'm needing him and switch its card with Linux one, and so not having any obstacles to their boot. Now, my questions are: I know unlikely traditional rotating disk drives, integrated circuits ones have a limited lifespan in terms of cluster rewriting. Is it an obstacle to that kind of usage? I mean, some Ultrabooks are using SSD now, is it the same issue, or there are some differences between Solid State Drives and Secure Digitals in that sense? Maybe having them to store system files which are in fixed positions (making the even-usage of cluster technology useless) constantly being re-read and updated and similar things just gets them soon unserviceable, do it? Second question: are all motherboards and BIOSes able to boot from SDs just like they are from USB pen drives (I mean, provided card reader is USB-connected, isn't it)? Or can't bootloaders like GRUB be installed on SDs working? If they can't, is it a solution installing GRUB to MBR and making boot option pointing to SD? Will it work? Are there any other problems to installing OSs on a Secure Digital?

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SATA drive problems with two SIL RAID cards

- by Jon Topper

I've just put a second SiI 3114 SATARaid card in my home server so that I could add another pair of SATA drives and increase my storage space. Annoyingly, it doesn't seem to work: [ 32.816030] ata5: lost interrupt (Status 0x0) [ 32.816072] ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen [ 32.816091] ata5.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in [ 32.816094] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 32.816101] ata5.00: status: { DRDY } [ 32.816117] ata5: hard resetting link [ 33.136082] ata5: SATA link down (SStatus 0 SControl 0) [ 36.060940] irq 18: nobody cared (try booting with the "irqpoll" option) [ 36.060949] Pid: 0, comm: swapper Not tainted 2.6.31-20-generic #58-Ubuntu [ 36.060954] Call Trace: [ 36.060977] [] ? printk+0x18/0x1c [ 36.060997] [] __report_bad_irq+0x27/0x90 [ 36.061005] [] note_interrupt+0x150/0x190 [ 36.061011] [] handle_fasteoi_irq+0xac/0xd0 [ 36.061023] [] handle_irq+0x18/0x30 [ 36.061029] [] do_IRQ+0x47/0xc0 [ 36.061042] [] ? irq_exit+0x50/0x70 [ 36.061058] [] ? smp_apic_timer_interrupt+0x57/0x90 [ 36.061065] [] common_interrupt+0x30/0x40 [ 36.061075] [] ? native_safe_halt+0x5/0x10 [ 36.061082] [] default_idle+0x46/0xd0 [ 36.061088] [] cpu_idle+0x8c/0xd0 [ 36.061103] [] rest_init+0x55/0x60 [ 36.061111] [] start_kernel+0x2e6/0x2ec [ 36.061117] [] ? unknown_bootoption+0x0/0x19e [ 36.061133] [] i386_start_kernel+0x7c/0x83 [ 36.061137] handlers: [ 36.061139] [] (sil_interrupt+0x0/0xb0) [ 36.061151] Disabling IRQ #18 [ 38.136014] ata5: hard resetting link [ 38.456022] ata5: SATA link down (SStatus 0 SControl 0) [ 43.456013] ata5: hard resetting link [ 43.776022] ata5: SATA link down (SStatus 0 SControl 0) [ 43.776035] ata5.00: disabled [ 43.776055] ata5.00: device reported invalid CHS sector 0 [ 43.776074] sd 4:0:0:0: [sde] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 43.776082] sd 4:0:0:0: [sde] Sense Key : Aborted Command [current] [descriptor] [ 43.776092] Descriptor sense data with sense descriptors (in hex): [ 43.776097] 72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00 [ 43.776112] 00 00 00 00 [ 43.776118] sd 4:0:0:0: [sde] Add. Sense: No additional sense information [ 43.776127] end_request: I/O error, dev sde, sector 0 [ 43.776136] Buffer I/O error on device sde, logical block 0 [ 43.776170] ata5: EH complete [ 43.776187] ata5.00: detaching (SCSI 4:0:0:0) root@core:~# cat /proc/interrupts CPU0 0: 47 IO-APIC-edge timer 1: 8 IO-APIC-edge i8042 6: 3 IO-APIC-edge floppy 7: 0 IO-APIC-edge parport0 8: 0 IO-APIC-edge rtc0 9: 0 IO-APIC-fasteoi acpi 14: 53069 IO-APIC-edge pata_sis 15: 53004 IO-APIC-edge pata_sis 17: 112265 IO-APIC-fasteoi sata_sil 18: 200002 IO-APIC-fasteoi sata_sil, SiS SI7012 19: 111140 IO-APIC-fasteoi eth0 20: 0 IO-APIC-fasteoi ohci_hcd:usb2 21: 0 IO-APIC-fasteoi ohci_hcd:usb3 23: 0 IO-APIC-fasteoi ehci_hcd:usb1 NMI: 0 Non-maskable interrupts LOC: 6650492 Local timer interrupts SPU: 0 Spurious interrupts CNT: 0 Performance counter interrupts PND: 0 Performance pending work RES: 0 Rescheduling interrupts CAL: 0 Function call interrupts TLB: 0 TLB shootdowns TRM: 0 Thermal event interrupts THR: 0 Threshold APIC interrupts MCE: 0 Machine check exceptions MCP: 160 Machine check polls ERR: 0 MIS: 0 root@core:~# lspci | grep Raid 00:09.0 RAID bus controller: Silicon Image, Inc. SiI 3114 [SATALink/SATARaid] Serial ATA Controller (rev 02) 00:0a.0 RAID bus controller: Silicon Image, Inc. SiI 3114 [SATALink/SATARaid] Serial ATA Controller (rev 02) root@core:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 9.10 Release: 9.10 Codename: karmic root@core:~# uname -a Linux core.topper.me.uk 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 05:23:09 UTC 2010 i686 GNU/Linux I've tried a combination of different kernel options (irqpoll, noapic, noacpi, pci=noapic) all to no avail. Does anyone have any bright ideas about how I can go about making this work? Swapping PCI cards around isn't an option as there are only two slots in this motherboard (an ASRock K7S41GX). The BIOS doesn't look to have too much in the way of configuration options regarding IRQ usage. Plan B is to ditch this server completely and buy a new QNAP for these drives to go in, but I was hoping to avoid doing this right now.

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variable in variable in batch and delayed expansion

- by rezna

Hi, I'm trying to use variable in variable in conjunction with delayed expansion but still no luck. SETLOCAL EnableDelayedExpansion SET ERROR_COMMAND=exit /B ^!ERRORLEVEL^! This is my last try. I want to setup an ERROR_COMMAND to be called when one of the steps in batch file crashes. The command is supposed to be: IF ERRORLEVEL 1 !ERROR_COMMAND! or IF ERRORLEVEL 1 %ERROR_COMMAND% The thing is, I'm not able to find out, how to SET properly the ERROR_COMMAND variable, so that ERRORLEVEL is not evaluated at the time of assignment, but at the time of evaluating the variable Of course I can copy&paste the code all over the batch file, but using the variable just seems a bit prettier... Anyone? Thanks, Milan

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Windbg pseudoregister expansion

- by Giuseppe Guerrini

Hi, I am trying to automate a device driver's debug session in Windows XP with Windbg. My device has an "index" register and a "data" register, both memory mapped. The index register must be filled with the internal register's index, and the value can be read from the data register. So, the followind Windbg command prints correctly the value of the internel register 0x4C: !ed [uc] 0xfa000000 0x4c; !dd [uc] 0xfa000004 L1 Now I would like to dump a range of internal registers, but it seems that the alias expansion doesn't work as expected in the !ed command. I am trying this cycle: .for (r $t0=0; @$t0<0x100; r $t0=@$t0+1) { !ed [uc] 0xfa000000 @$t0; !dd [uc] 0xfa000004 L1 } but it seems that the !ed command is ignored, as if @$t0 was expanded in an empty string. Tried "$t0", "@$t0", "${t0}" and "@${t0}", but without success. What am I doing wrong? Thank you in advance

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How do you perform macro expansion within #ifdef?

- by Malvineous

Hi all, I have some fairly generic code which uses preprocessor macros to add a certain prefix onto other macros. This is a much simplified example of what happens: #define MY_VAR(x) prefix_##x "prefix_" is actually defined elsewhere, so it will be different each time the file is included. It works well, but now I have some code I would like to skip if one of the tokens doesn't exist, but this doesn't work: #if defined MY_VAR(hello) What I want it to expand to is this: #ifdef prefix_hello But I can't figure out how. I need to use the MY_VAR() macro to do the expansion, so I can't just hardcode the name. (It's actually for some testing code, the same code gets included with a different prefix each time to test a bunch of classes, and I want to skip a couple of tests for a handful of the classes.) Is this possible with the C++ preprocessor?

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JAX-RS implementation of link/element expansion?

- by Jimmy

While reading documentation of Google Data API and Atlassian REST API, I found interesting functionality - link (or title, element expansion) - http://bit.ly/i3rKMw. I would like to implement this functionality in my Java project of web service server for our IS, but I can't find any proper solution or advices for implementation. My project is quite big with many services so I need some robust and most automated solution. I was thinking about how to implement it like an extension for RESTEasy and JAXB, but it seems to be very complicated. Do you know some opensource projects which implements this functionality or any advices which could help me?

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ISA bus on newer computers

- by Kevin Ivarsen

Are there companies that sell new computers that support old ISA bus expansion cards? We have an aging computer running DOS that operates some machinery via an ISA interface board. Updated versions of this board (e.g. PCI, USB) are not available, and I am concerned about the long-term reliability of the 8+ year old computers we currently keep around as backups. If these newer ISA-capable machines exist, are there any general gotchas to be aware of in terms of compatibility with older expansion boards, ability to run DOS, etc.?

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Windows 7 interfering with smart cards

- by Dennis

I have an application that uses the PC/SC API to communicate with smart cards. On Windows 7, I get strange results: the data returned from the cards is inconsistent and invalid with certain commands. If I disable the Smart Card Plug and Play service in group policy then everything works fine. Has anyone experienced anything similar? Is there any way to get the smart card plug and play service to play nice? It would be nice to not have to disable it...

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OpenGL/GLSL checking if shader compiled fine on intel cards

- by clamp

hello, i am using this code to check if my glsl shader compiled fine. glGetObjectParameterivARB(obj, GL_OBJECT_INFO_LOG_LENGTH_ARB, &infologLength); if (infologLength > 1) { int charsWritten = 0; char * const infoLog = new char[infologLength]; glGetInfoLogARB(obj, infologLength, &charsWritten, infoLog); tError(infoLog, false); delete infoLog; } } the length of the returned string is empty on nvidia and ATI cards, but on intel cards this one returns the string "no errors." now what is the best way to find out, if there are really no errors? should i just check for this string? or is there a convention what this function glGetInfoLogARB should return?

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Apk Expansion Files - Application Licensing - Developer account - NOT_LICENSED response

- by mUncescu

I am trying to use the APK Expansion Files extension for Android. I have uploaded the APK to the server along with the extension files. If the application was previously published i get a response from the server saying NOT_LICENSED: The code I use is: APKExpansionPolicy aep = new APKExpansionPolicy(mContext, new AESObfuscator(getSALT(), mContext.getPackageName(), deviceId)); aep.resetPolicy(); LicenseChecker checker = new LicenseChecker(mContext, aep, getPublicKey(); checker.checkAccess(new LicenseCheckerCallback() { @Override public void allow(int reason) { @Override public void dontAllow(int reason) { try { switch (reason) { case Policy.NOT_LICENSED: mNotification.onDownloadStateChanged(IDownloaderClient.STATE_FAILED_UNLICENSED); break; case Policy.RETRY: mNotification.onDownloadStateChanged(IDownloaderClient.STATE_FAILED_FETCHING_URL); break; } } finally { setServiceRunning(false); } } @Override public void applicationError(int errorCode) { try { mNotification.onDownloadStateChanged(IDownloaderClient.STATE_FAILED_FETCHING_URL); } finally { setServiceRunning(false); } } }); So if the application wasn't previously published the Allow method is called. If the application was previously published and now it isn't the dontAllow method is called. I have tried: http://developer.android.com/guide/google/play/licensing/setting-up.html#test-response Here it says that if you use a developer or test account on your test device you can set a specific response, I use LICENSED as response and still get NOT_LINCESED. Resetting the phone, clearing google play store cache, application data. Changing the versioncode number in different combinations still doesn't work. Edit: In case someone else was facing this problem I received an mail from the google support team We are aware that newly created accounts for testing in-app billing and Google licensing server (LVL) return errors, and are working on resolving this problem. Please stay tuned. In the meantime, you can use any accounts created prior to August 1st, 2012, for testing. So it seems to be a problem with their server, if I use the main developer thread everything works fine.

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Conditional macro expansion

- by Dave DeLong

Heads up: This is a weird question. I've got some really useful macros that I like to use to simplify some logging. For example I can do Log(@"My message with arguments: %@, %@, %@", @"arg1", @"arg2", @"arg3"), and that will get expanded into a more complex method invocation that includes things like self, _cmd, __FILE__, __LINE__, etc, so that I can easily track where things are getting logged. This works great. Now I'd like to expand my macros to not only work with Objective-C methods, but general C functions. The problem is the self and _cmd portions that are in the macro expansion. These two parameters don't exist in C functions. Ideally, I'd like to be able to use this same set of macros within C functions, but I'm running into problems. When I use (for example) my Log() macro, I get compiler warnings about self and _cmd being undeclared (which makes total sense). My first thought was to do something like the following (in my macro): if (thisFunctionIsACFunction) { DoLogging(nil, nil, format, ##__VA_ARGS__); } else { DoLogging(self, _cmd, format, ##__VA_ARGS__); } This still produces compiler warnings, since the entire if() statement is substituted in place of the macro, resulting in errors with the self and _cmd keywords (even though they will never be executed during function execution). My next thought was to do something like this (in my macro): if (thisFunctionIsACFunction) { #define SELF nil #define CMD nil } else { #define SELF self #define CMD _cmd } DoLogging(SELF, CMD, format, ##__VA_ARGS__); That doesn't work, unfortunately. I get "error: '#' is not followed by a macro parameter" on my first #define. My other thought was to create a second set of macros, specifically for use in C functions. This reeks of a bad code smell, and I really don't want to do this. Is there some way I can use the same set of macros from within both Objective-C methods and C functions, and only reference self and _cmd if the macro is in an Objective-C method?

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CPU Wars Is a Trump-Style Card Game Driven by Chip Stats

- by Jason Fitzpatrick

If you’re looking for the geekiest card game around, you’d be hard pressed to beat CPU Wars–a top-trumps card game built around CPU specs. From the game’s designers: CPU Wars is a trump card game built by geeks for geeks. For Volume 1.0 we chose 30 CPUs that we believe had the greatest impact on the desktop history. The game is ideally played by 2 or 3 people. The deck is split between the players and then each player takes a turn and picks a category that they think has the best value. We have chosen the most important specs that could be numerically represented, such as maximum speed achieved and maximum number of transistors. It’s lots of fun, it has a bit of strategy and can be played during a break or over a coffee. If you’re interested, you can pick up a copy for £7.99 (roughly $12.50 USD). Hit up the link below for more information. How To Customize Your Wallpaper with Google Image Searches, RSS Feeds, and More 47 Keyboard Shortcuts That Work in All Web Browsers How To Hide Passwords in an Encrypted Drive Even the FBI Can’t Get Into

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I need advice on how to best handle an e-commerce situation

- by Mohamad

I recently moved to Brazil and started a small subscription based service company. The payment gateway market is under-developed in Brazil, and implementing a local solution is too expensive for me. My requirements are a payment gateway that will automatically process monthly recurrent billing, and that will allow me to manually charge my customers when needed. They would also have to deal with storage and security. I'm leaning towards manually processing payments myself as a restaurant would do, for example, using small swipe machines. Unfortunately, this would require me to store credit card information and I would rather not, but I feel it's my only option. Can anyone give me advice on how to tackle this problem? Do I have other options? If I decide to store credit card information, what should I keep in mind and how should I go about it? I have moderate skills in programming, and through tenacity I can get most things done. I'm afraid that this might be out of my league, however.

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Handling & processing credit card payments

- by Bob Jansen

I'm working on program that charges customers on a pay as you go per month modal. This means that instead of the customers paying their invoices at the start of the month, they will have to pay at the end of the month. In order to secure the payments I want my customers credit card information stored so that they can be charged automatically at the end of the month. I do not have the resources, time, or risk to handle and store my customers credit card information on my servers and am looking for a third party solution. I'm a tad overwhelmed by all the different options and services that are out there and was wondering if anyone with experience have any recommendations and tips. I'm having difficulty finding services that allow me to to store my customers credit card information and charge them automatically. Most of them seem to offer an invoice styled approach.

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Special scheduling Algorithm (pattern expansion)

- by tovare

Question Do you think genetic algorithms worth trying out for the problem below, or will I hit local-minima issues? I think maybe aspects of the problem is great for a generator / fitness-function style setup. (If you've botched a similar project I would love hear from you, and not do something similar) Thank you for any tips on how to structure things and nail this right. The problem I'm searching a good scheduling algorithm to use for the following real-world problem. I have a sequence with 15 slots like this (The digits may vary from 0 to 20) : 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 (And there are in total 10 different sequences of this type) Each sequence needs to expand into an array, where each slot can take 1 position. 1 1 0 0 1 1 1 0 0 0 1 1 1 0 0 1 1 0 0 1 1 1 0 0 0 1 1 1 0 0 0 0 1 1 0 0 0 1 1 1 0 0 0 1 1 0 0 1 1 0 0 0 1 1 1 0 0 0 1 1 The constraints on the matrix is that: [row-wise, i.e. horizontally] The number of ones placed, must either be 11 or 111 [row-wise] The distance between two sequences of 1 needs to be a minimum of 00 The sum of each column should match the original array. The number of rows in the matrix should be optimized. The array then needs to allocate one of 4 different matrixes, which may have different number of rows: A, B, C, D A, B, C and D are real-world departments. The load needs to be placed reasonably fair during the course of a 10-day period, not to interfere with other department goals. Each of the matrix is compared with expansion of 10 different original sequences so you have: A1, A2, A3, A4, A5, A6, A7, A8, A9, A10 B1, B2, B3, B4, B5, B6, B7, B8, B9, B10 C1, C2, C3, C4, C5, C6, C7, C8, C9, C10 D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 Certain spots on these may be reserved (Not sure if I should make it just reserved/not reserved or function-based). The reserved spots might be meetings and other events The sum of each row (for instance all the A's) should be approximately the same within 2%. i.e. sum(A1 through A10) should be approximately the same as (B1 through B10) etc. The number of rows can vary, so you have for instance: A1: 5 rows A2: 5 rows A3: 1 row, where that single row could for instance be: 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 etc.. Sub problem* I'de be very happy to solve only part of the problem. For instance being able to input: 1 1 2 3 4 2 2 3 4 2 2 3 3 2 3 And get an appropriate array of sequences with 1's and 0's minimized on the number of rows following th constraints above.

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Video and LAN Cards are not recognized on Intel DG41RQ MB

- by artyom

Hello, My 32 bit Debian Etch with Etch-n-Half kernel 2.6.24 and Etch-n-half video driver xserver-xorg-video-intel 2.2.1-1~etchnhalf2 does not recognize my on-board LAN and Video. I can work only with VESA display. And additional PCI LAN card (that I wanted to use for Cross-X-Cabel). output of lspci 00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03) 00:01.0 PCI bridge: Intel Corporation 4 Series Chipset PCI Express Root Port (rev 03) 00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01) 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 01) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01) 00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller (rev 01) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01) 04:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10 According to MB Spec: Video: Intel G41 Express Chipset Graphics and Memory Controller Hub Graphics (GMCH) LAN: Realtek 8111D Gigabit Ethernet Controller LAN Support When I run dpkg-reconfigure xserver-xorg is suggest i810 driver but X does not start, it does not start with intel driver as well; only vesa. LAN I even can't find in lspci... the last Realtek card is external one 100MB card. Where to start from?

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Mixing different generations of ATi video cards

- by middaparka

I'm heading in the direction of a three monitor set up and hence suspect I need to go the dual video card route. At the moment, I've a Radeon X1900GT driving two 19" monitors which I'd like to keep and augment with something like a Radeon 5570 which would drive a 22" display. As such, I'm just wondering how Catalyst will cope with this configuration and whether there are any other issues that I'm likely to encounter. In terms of the obvious, my motherboard has two PCI-E slots and my power supply has two video card power connectors, so I'm hopefully covered from that side of things. Thanks in advance.

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Copying SD Cards with "LaCie d2 Network"

- by rjstelling

The LaCie d2 Network has a feature where by you can attach a USB drive and press the blue button at the from and it will copy the drive contents (no computer required). (See this review for more info). USB 2.0 and eSATA ports are also provided but these are not designed for extending the d2 Network's storage. Rather, they allow you to connect portable drives for uploading their data to the d2 Network directly. The process is quite slick, too: just plug in a drive and press the big blue button on the front of the unit to trigger an immediate upload. This copies over everything on the external device and seems ideal for camera use. Is it possible to use an microSD or SD card adapter (like the Kingston MobileLite 9-in-1) and copy the contents of the card? I'm assuming the card reader just "looks like" a normal USB flash drive the computer or (in this case) LaCie d2 Network. Is this assumption correct? Do you know any reason why this won't work?

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vSphere 5.5: Binding VMs to HBA cards on the host

- by red888

I am settings up a lab and wanted to be sure the following makes sense\is possible: One server running vsphere with two fiber HBAs 2 Windows 2012 Hyper-V VMs each bound to an HBA I'm using vsphere because it supports nested visualization, but I'm really setting up this lab to test out hyper-v and live migrations. Will I easily be able to bind each VM to a physical HBA on the host or are there any caveats I should know about?

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3 Monitors 2 different graphic cards

- by Michael

I am looking to add a third monitor to my workstation. I currently have 2 monitors connected to a geforce gt 120. I am wanting to find the cheapest solution on adding another monitor, I have a old ati x300 laying around and wanting to know if I would be able to use that to power the other monitor and if it would conflict with my other graphic card (I am not a gamer). What I want to do is have the at x300 power 1 monitor via dvi and the gt 120 power 2 monitors via vga and dvi. Thanks edit: im running windows 7 64bit

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