It seems that with kernel version 3.12 the problem is nearly fixed. Since I upgraded to version 3.12-RC7 and 3.12.0 I had only 1 freeze during the last two weeks.
I did not know what changed in the kernel in this version. I no longer think that the problem is related to the GPU but to the WIFI. Is this possible? I found this discussion which looks to me similar to my own description: https://bbs.archlinux.org/viewtopic.php?id=168122 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1137817 Title: [ivb] [WORTMANN TERRA MOBILE ULTRABOOK 1450 II] System freeze after high memory usage Status in “linux” package in Ubuntu: Incomplete Bug description: I have a Wortmann Terra Mobile 1450 II: http://www.wortmann.de/de-de/product/aa_terra_mobile_nb/1220285/terra-mobile-ultrabook-1450-ii.aspx that randomly system freezes on Ubuntu 12.10 64 bit since I installed my system in Dec. 2012. When the system freezes no mouse , no keyboard, no REISUB is possible. The screen is corrupted and did not update. The only key board functionality which is still possible is Fn+F9 (switch display on/off). I need to switch off the system hard. The freeze occurs when the system runs on battery as also when it is plugged. When the system freeze occurs with power adapter plugged the system switches off when I disconnect the power adapter - even if the battery is full charged. But the powermanagement in general seems to work perfect in Ubuntu 12.10. To me it looks like the system freeze occurs often after high memory usage. I can use the system with a few applications (Thunderbird / Firefox) for long time (several hours) without any freeze. But when I start java programming the probability increases that the problem occurs. This means: I start Eclipse 4.2, MySQL and GlassFish 3.2 Server. I open a lot of browser windows and read and write much files to disk. The memory usage in this case increases from less then 1GB to more than 3GB (on total 8GB Ram) - I do not know if this is relevant - but maybe. I observe the situation for more than two months. As I use my system for work I have freezes one or two times a day - mostly when I have much work ;-) I develop JEE server business applications - so in the situation when the system freezes there is really no heavy graphic load. I am using Gnome Shell. The freeze seems to be absolutely randomly - I can not reproduce the system freeze. I can not be sure but it seems to me that since yesterday the system shuts down after some seconds when it feezes. I notice this because I tried to login via ssh to collect the data of the file /sys/kernel/debug/dri/0/i915_error_state. But as the system shuts down I was not able to check the content. --- ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 4258 F.... pulseaudio ubuntu 14314 F.... pulseaudio CasperVersion: 1.331 DistroRelease: Ubuntu 13.04 LiveMediaBuild: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: To be filled by O.E.M. To be filled by O.E.M. MarkForUpload: True Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8 RelatedPackageVersions: linux-restricted-modules-3.8.0-19-generic N/A linux-backports-modules-3.8.0-19-generic N/A linux-firmware 1.106 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: raring Uname: Linux 3.8.0-19-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 09/21/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X300V TR.2 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: ChiefRiver dmi.board.vendor: INTEL Corporation dmi.board.version: To be filled by O.E.M. dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX300VTR.2:bd09/21/2012:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnINTELCorporation:rnChiefRiver:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: To be filled by O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1137817/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
