Hello, I just arrived to this bug and read all posts, took me 5 hours yet to compile a summary:
Summary of ideas that seem to have fixed, or improved the situation of some people: #91 (install kernel 3.3.6) #112 (choose the right nouveau driver) #117 (install kernel 3.4.0) #165 (sudo intel_reg_write 0x2120 '0x1206800' in /etc/rc.local) #279 (USB ports) #321 (combination of i915.i915_enable_rc6=0 and i915.i915_enable_fbc=0) (also in #349) #336 (disable monitor power management) #370 (Win7 dual boot) #373 (use flash aid) #429 (stop OS fan management) Summary of the 3 types of bugs: (Sorry, I might definitely be wrong, the amount of information is too large for my poor brain, I still spend quite some time reading the 430 posts, and re-reading many) bug 1) bug that freezes the graphics, but the mouse pointer is still moving most can still access the console ctrl-alt-F1, but not always... can reboot through CTRL+ALT+SysRq REISUB typically happens once every 5 to 20 min, impossible to work (sometimes once a day: #20, sometimes at boot time: #79) looks strongly correlated to Nvidia proprietary drivers (many cases), but may also affects Nouveau drivers (#3, #20, #79, #149) moving to the console may hard-freeze it all it looks like there is nothing in /var/log/syslog Posts describe solutions by: - #112 (choose the right nouveau driver) Changing kernel doesn't seems to help These people should join this bug: Nvidia, Complete freezes with only mouse pointer still moving (Please read #425 for more precise) https://bugs.launchpad.net/bugs/1033263 bug 2) bug that freezes graphics and mouse last sound sample repeated continuously no mouse, no keyboard, no ctrl-alt-SysRq REISUB only reports about ssh not working, one post about ping working typically happens once every 1 to 8 hours looks correlated to SandyBridge and IvyBridge, but also affects people with: AMD Fusion (#373), Nvidia Nouveau (#277), ATI Radeon graphics with flgrx drivers (#49) some people have things in /var/log/syslog might loose data Posts describe solutions by: - using kernel 3.3.6 (#91), many success, but not always (see #120) - using kernel 3.4.0 (#117) - combination of i915.i915_enable_rc6=0 and i915.i915_enable_fbc=0 (#321), many success, but one (#401) - using Debian 6.0.5 (#124) These people should join this bug: IvyBridge, 64 bit System freezes (mouse, keyboard) (see #308) https://bugs.launchpad.net/bugs/999910 Other comments: - Problem persists with regular Unity and Unity 2D desktop. - Problem does NOT occurr when using old Nvidia 8400GS discrete graphics card. bug 3) bug that freezes graphics, but can still access the console ctrl-alt-F1 post GC occurrence (5/6 ATI & 1/6 Xeon): ATI RV515GL, no proprietary driver; ATI Radeon X1400; ATI X1400; radeon X2300; Radeon HD 3200; VGA Xeon E3-1200 Processor Family Integrated Graphics Controller mouse might or might not move might completely freeze when going back to X might be related to compiz (#12) might loose data Interesting comments: - Still freezing, both with kernel 3.2.0.24 and kernel 3.3.6. These people should create a new bug report. Obviously this is not complete, since other people fixed their problems using other ways... crazy bug! Since I'm trying to have a full summary, here is another broad bug report for the records: Kernel Hard Freezing Very Often (see #279) https://bugs.launchpad.net/bugs/908335 More generally, as both an (external) programmer and an Ubuntu user I have to agree this is both: - very very hard to track down where it can come from (the variety of messages is incredible) - very very annoying this critical bug is not yet fixed (two month and you can't work well) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/993187 Title: ubuntu 12.04 completely freezes frequently. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp