Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.1 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-rc8-unstable/ -- 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/1465364 Title: Laptop freeze with panic error Status in linux package in Ubuntu: Confirmed Bug description: When getting back to the pc and the screen is turned off, the pc freeze and sometime show a message like (sorry do not have full message) drm_kms_helper: panic ... In dmesg I see a lot of noveau related error like [ +0,001098] nouveau E[ PFIFO][0000:01:00.0] SCHED_ERROR [ UNK08 ] # thousand like this! [ +0,001099] nouveau E[ PFIFO][0000:01:00.0] SCHED_ERROR [ UNK08 ] [ +0,001098] nouveau E[ PFIFO][0000:01:00.0] SCHED_ERROR [ UNK08 ] [ +0,001099] nouveau E[ PFIFO][0000:01:00.0] SCHED_ERROR [ UNK08 ] [ +0,001097] nouveau E[ PFIFO][0000:01:00.0] SCHED_ERROR [ UNK08 ] [ +0,001096] nouveau E[ PFIFO][0000:01:00.0] SCHED_ERROR [ UNK08 ] [ +0,000566] nouveau E[ PFIFO][0000:01:00.0] runlist 4 update timeout [ +0,000123] [drm] Initialized nouveau 1.2.1 20120801 for 0000:01:00.0 on minor 1 [ +1,260477] nouveau [ PGRAPH][0000:01:00.0] using external firmware [ +0,000022] nouveau 0000:01:00.0: Direct firmware load for nouveau/nv117_fuc409c failed with error -2 [ +0,000006] nouveau 0000:01:00.0: Direct firmware load for nouveau/fuc409c failed with error -2 [ +0,000001] nouveau E[ PGRAPH][0000:01:00.0] failed to load fuc409c [giu15 20:06] nouveau E[ PIBUS][0000:01:00.0] HUB0: 0x6013d4 0xffff573f (0x1c408200) [giu15 20:09] nouveau E[ PIBUS][0000:01:00.0] HUB0: 0x6013d4 0xffffffff (0x1b40822c) ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-20-generic 3.19.0-20.20 ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 Uname: Linux 3.19.0-20-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: l 1422 F.... pulseaudio /dev/snd/controlC0: l 1422 F.... pulseaudio CurrentDesktop: LXDE Date: Mon Jun 15 20:09:15 2015 HibernationDevice: RESUME=UUID=5bb9993a-20aa-42b9-b775-d2508ba91475 InstallationDate: Installed on 2015-04-16 (59 days ago) InstallationMedia: Lubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: LENOVO 20378 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-20-generic root=UUID=949b66c8-bdcd-4186-980e-b873d5da5906 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143.1 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-05-24 (22 days ago) dmi.bios.date: 08/18/2014 dmi.bios.vendor: LENOVO dmi.bios.version: 9ECN31WW(V1.14) dmi.board.asset.tag: 00000000NO DPK dmi.board.name: Lenovo Y50-70 dmi.board.vendor: LENOVO dmi.board.version: 00000000NO DPK dmi.chassis.asset.tag: 00000000NO DPK dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Y50-70 dmi.modalias: dmi:bvnLENOVO:bvr9ECN31WW(V1.14):bd08/18/2014:svnLENOVO:pn20378:pvrLenovoY50-70:rvnLENOVO:rnLenovoY50-70:rvr00000000NODPK:cvnLENOVO:ct10:cvrLenovoY50-70: dmi.product.name: 20378 dmi.product.version: Lenovo Y50-70 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1465364/+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
