Well, 3.12.7 and 3.12.6 work fine with DPM on Radeon HD 6800s. Only kernel 3.13s are broken with DPM on Radeon HD 6800s. My Radeon HD 7950 works fine with DPM on kernel 3.13. I've never bisected anything before and don't have the time to do it at the moment.
-- 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/1266984 Title: Kernel 3.13 [AMD DPM] Radeon HD 6800 Crashes and/or Hangs Status in “linux” package in Ubuntu: Triaged Bug description: Using the latest 3.13-rc7 on two of my AMD machines, both of which have Radeon HD 6850 graphics cards in them, the system crashes when playing videos. I think it may be easier to cause the crash when playing a video that is 720p+. It also is not limited to crashing when playing videos, but can also crash simply from browsing the web or doing anything that causes a demand on the GPU. It may or may not be related to DPM implemented in the latest kernels. Using kernel 3.12 from Trusty repos with DPM enabled, it works fine. I have a machine with a Radeon HD 7950 but I have not tested it yet. Similarly, I have used an AMD Richland APU which crashes with kernel 3.13 immediately on the login screen. Put simply, there needs to be a lot of testing of AMD chips before releasing kernel 3.13 for Trusty stable. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.12.0-7-generic 3.12.0-7.15 ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4 Uname: Linux 3.12.0-7-generic x86_64 ApportVersion: 2.12.7-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ching 2397 F.... pulseaudio /dev/snd/controlC0: ching 2397 F.... pulseaudio CRDA: country AU: (2402 - 2482 @ 40), (N/A, 20) (5170 - 5250 @ 40), (3, 23) (5250 - 5330 @ 40), (3, 23), DFS (5735 - 5835 @ 40), (3, 30) CurrentDesktop: Unity Date: Tue Jan 7 23:50:13 2014 HibernationDevice: RESUME=UUID=39d467a4-e793-46df-9a88-10813a999704 MachineType: System manufacturer System Product Name ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.12.0-7-generic root=UUID=1533ba1d-4ff6-4974-839f-5074ef65a6f1 ro splash quiet radeon.audio=1 radeon.dpm=1 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.12.0-7-generic N/A linux-backports-modules-3.12.0-7-generic N/A linux-firmware 1.119 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/13/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3503 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: M4A78T-E dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3503:bd04/13/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A78T-E:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1266984/+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
