That last comment was from last week - I still had it in my firefox "Restore Session" and had not pressed "Post Comment" yet.
But it just happened again today - it looks like the frequency of this bug is increasing with newer kernel, xorg-server, and xorg-drivers-radeon releases . Here is the info from today's lockup : (gdb) where #0 0x00007f8c7e248337 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f8c7f52f3a4 in drmIoctl () from /usr/lib/x86_64-linux-gnu/libdrm.so.2 #2 0x00007f8c7f5316bf in drmCommandWriteRead () from /usr/lib/x86_64-linux-gnu/libdrm.so.2 #3 0x00007f8c7a093c83 in ?? () from /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1 #4 0x00007f8c7a2d52d9 in ?? () from /usr/lib/xorg/modules/drivers/radeon_drv.so #5 0x00007f8c79c46856 in ?? () from /usr/lib/xorg/modules/libexa.so #6 0x00007f8c79c46c9b in ?? () from /usr/lib/xorg/modules/libexa.so #7 0x00007f8c807c4c2d in miCopyRegion () #8 0x00007f8c807c51b6 in miDoCopy () #9 0x00007f8c79c45326 in ?? () from /usr/lib/xorg/modules/libexa.so #10 0x00007f8c80771b38 in ?? () #11 0x00007f8c8068d3d1 in ?? () #12 0x00007f8c80690f0e in ?? () #13 0x00007f8c80694d9a in ?? () #14 0x00007f8c7e178ec5 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 #15 0x00007f8c806801ee in _start () (gdb) info regs Undefined info command: "regs". Try "help info". (gdb) info reg rax 0xfffffffffffffe00 -512 rbx 0xffffffff 4294967295 rcx 0xffffffffffffffff -1 rdx 0x7fffa4188270 140735946457712 rsi 0xc020645d 3223348317 rdi 0xc 12 rbp 0x7fffa4188270 0x7fffa4188270 rsp 0x7fffa4188218 0x7fffa4188218 r8 0x7f8c85add9c0 140241514912192 r9 0x0 0 r10 0x7fffa4188330 140735946457904 r11 0x246 582 r12 0xc020645d 3223348317 r13 0xc 12 r14 0x753000 7680000 r15 0x4 4 rip 0x7f8c7e248337 0x7f8c7e248337 <ioctl+7> eflags 0x246 [ PF ZF IF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0 This time I did not see the 'GPU lockup CP stall' messages in the dmesg output - it looks like the newer Xorg server & radeon_drv are capable of locking up all on their own without a GPU lockup . -- 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/1409393 Title: radeon GPU lockup CP stall Status in linux package in Ubuntu: Confirmed Bug description: Ubuntu 14.04.1 LTS I was working on a project and had the following applications open MySQL Workbench Google Chrome gnome-screenshot All of a sudden everything freezes, the indicator-multiload stopped moving. I was able to switch to tty1 using CTRL+ALT+F1 (see foto of the screen in the attachments) The error reads: radeon 0000:01:00.0: GPU lockup CP stall for more than 84744msec drm:radeon_cs_ib_fill *ERROR* Failed to get ip ! drm:r600_dma_ring_test *ERROR* radeon: ring 3 test failed (0xCAFEDEAD) drm:r600_resume *ERROR* r600 startup failed on resume ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: kat 3551 F.... pulseaudio /dev/snd/controlC0: kat 3551 F.... pulseaudio Date: Sun Jan 11 05:33:50 2015 InstallationDate: Installed on 2014-03-28 (288 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140322) MachineType: Sony Corporation VGN-FW31ZJ ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=nl_NL.UTF-8 SHELL=/bin/bash ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.13.0-43-generic root=UUID=6bc3bac2-11d6-4d1a-8d93-7c9b6894ea5e ro rootflags=subvol=@ quiet splash radeon.dpm=1 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.11 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/27/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: R2060Y0 dmi.board.asset.tag: N/A dmi.board.name: VAIO dmi.board.vendor: Sony Corporation dmi.board.version: N/A dmi.chassis.asset.tag: N/A dmi.chassis.type: 10 dmi.chassis.vendor: Sony Corporation dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR2060Y0:bd08/27/2009:svnSonyCorporation:pnVGN-FW31ZJ:pvrC6015XL3:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A: dmi.product.name: VGN-FW31ZJ dmi.product.version: C6015XL3 dmi.sys.vendor: Sony Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1409393/+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