apport information ** Tags added: apport-collected
** Description changed: While using Kubuntu 14.10 sometimes the screen blacks out for a few seconds and then comes back to life, but often with highly reduced resolution. The resolution of the screen actually seems to be fine (as evident by taking a screenshot) but things seem to get rendered on a much too small buffer and then streched to fit the screen (terrible upscaling?). Sorry I'm having a hard time explaining it, but see the attached screenshot. This actually happened multiple times. One time it logged me out of KDE, another time KDE stayed active but the resolution was reduced (or whatever this is) Attached is the output of dmesg, the relevant error seems to start here: [12105.193052] radeon 0000:01:00.0: ring 0 stalled for more than 10140msec [12105.193058] radeon 0000:01:00.0: GPU lockup (waiting for 0x00000000000dec08 last fence id 0x00000000000dec03 on ring 0) [12105.674184] radeon 0000:01:00.0: Saved 592 dwords of commands on ring 0. [12105.674320] radeon 0000:01:00.0: GPU softreset: 0x0000006C + --- + ApportVersion: 2.14.7-0ubuntu8 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC2: afiefh 2735 F.... pulseaudio + /dev/snd/pcmC0D0p: afiefh 2735 F...m pulseaudio + /dev/snd/controlC0: afiefh 2735 F.... pulseaudio + /dev/snd/controlC1: afiefh 2735 F.... pulseaudio + CurrentDesktop: KDE + DistroRelease: Ubuntu 14.10 + HibernationDevice: RESUME=UUID=2a980291-317d-413c-867c-14dfe0a1e701 + InstallationDate: Installed on 2014-10-17 (17 days ago) + InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140923) + MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. + Package: linux (not installed) + ProcFB: 0 radeondrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic.efi.signed root=UUID=f9b26eb7-84d6-4fba-8574-3966b80cdf3a ro quiet splash vt.handoff=7 + ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 + RelatedPackageVersions: + linux-restricted-modules-3.16.0-24-generic N/A + linux-backports-modules-3.16.0-24-generic N/A + linux-firmware 1.138 + Tags: utopic + Uname: Linux 3.16.0-24-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo + _MarkForUpload: True + dmi.bios.date: 12/06/2013 + dmi.bios.vendor: American Megatrends Inc. + dmi.bios.version: F16 + dmi.board.asset.tag: To be filled by O.E.M. + dmi.board.name: H77-D3H + dmi.board.vendor: Gigabyte Technology Co., Ltd. + dmi.board.version: x.x + dmi.chassis.asset.tag: To Be Filled By O.E.M. + dmi.chassis.type: 3 + dmi.chassis.vendor: Gigabyte Technology Co., Ltd. + dmi.chassis.version: To Be Filled By O.E.M. + dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF16:bd12/06/2013:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH77-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.: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: Gigabyte Technology Co., Ltd. ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1386867/+attachment/4253107/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1386867 Title: radeon fence failure reduces screen resolution To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386867/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
