For me this bug reproducible only with 3.16 and 3.17 kernels. With 3.15 and previous kernels this bug is not reproducible, at least on my hardware (Radeon HD 6620G).
-- 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/1362261 Title: CONFIG_DMA_CMA causes ttm performance problems/hangs Status in “linux” package in Ubuntu: Fix Committed Status in “linux” source package in Trusty: Incomplete Status in “linux” source package in Utopic: Fix Committed Bug description: The x86_64 kernels have CONFIG_DMA_CMA enabled, this causes extrem hangs of at least the RADEON driver full discussion is here: http://lists.freedesktop.org/archives/dri- devel/2014-August/065842.html ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-10-generic 3.16.0-10.15 ProcVersionSignature: Ubuntu 3.16.0-10.15-generic 3.16.1 Uname: Linux 3.16.0-10-generic x86_64 ApportVersion: 2.14.6-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: aschultz 2224 F.... pulseaudio /dev/snd/controlC1: aschultz 2224 F.... pulseaudio CurrentDesktop: XFCE Date: Wed Aug 27 18:57:02 2014 HibernationDevice: RESUME=UUID=702fb398-84d9-4e93-9b4b-980323bf2d53 MachineType: Hewlett-Packard HP EliteBook 8560w ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.16.0-10-generic root=UUID=9a10044a-a505-4049-b794-a0ab87709daa ro rootflags=subvol=@ quiet splash init=/lib/systemd/systemd vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.16.0-10-generic N/A linux-backports-modules-3.16.0-10-generic N/A linux-firmware 1.132 SourcePackage: linux UpgradeStatus: Upgraded to utopic on 2014-07-21 (37 days ago) dmi.bios.date: 07/15/2013 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68SVD Ver. F.42 dmi.board.name: 1631 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 01.3D dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68SVDVer.F.42:bd07/15/2013:svnHewlett-Packard:pnHPEliteBook8560w:pvrA0001D02:rvnHewlett-Packard:rn1631:rvrKBCVersion01.3D:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP EliteBook 8560w dmi.product.version: A0001D02 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1362261/+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
