Public bug reported: I have a Radeon HD 5770 GPU. After upgrading to Xenial today and ensuring the xorg radeon driver was enabled, my machine will no longer boot to a usable state. After selecting default Ubuntu option from GRUB menu, both monitor lose signal input and the keyboard becomes unresponsive. Sometimes the machine will reboot on its own, most of the time I have to hard reset.
If I add `nomodeset` or `radeon.modeset=0` to kernel line in GRUB, the machine will boot but the radeon driver will not load. Attempting to load radeon driver with `sudo modprobe radeon modeset=1` after booting with modesetting off results in the same fail state explained above. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6 Uname: Linux 4.4.0-18-generic x86_64 .tmp.unity.support.test.1: ApportVersion: 2.20.1-0ubuntu1 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,grid,mousepoll,widget,regex,vpswitch,resize,imgpng,place,gnomecompat,wall,move,animation,fade,snap,expo,scale,unitymtgrabhandles,ezoom,session,workarounds] CompositorRunning: None Date: Sat Apr 9 20:02:22 2016 DistUpgraded: 2016-04-09 16:49:55,340 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process "./xorg_fix_proprietary.py" (No such file or directory) (8)) DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: vboxhost, 5.0.12, 4.2.0-35-generic, x86_64: installed vboxhost, 5.0.12, 4.4.0-18-generic, x86_64: installed ExtraDebuggingInterest: Yes GpuHangFrequency: Continuously GpuHangReproducibility: Yes, I can easily reproduce it GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Juniper XT [Radeon HD 5770] [1002:68b8] (prog-if 00 [VGA controller]) Subsystem: XFX Pine Group Inc. Juniper XT [Radeon HD 5770] [1682:2990] InstallationDate: Installed on 2013-12-29 (832 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: System manufacturer System Product Name ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic root=UUID=e7310b2e-03b9-4e94-ba8a-d384330592cf ro quiet splash radeon.modeset=0 Renderer: Software SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: Upgraded to xenial on 2016-04-09 (0 days ago) dmi.bios.date: 04/29/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0519 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5N7A-VM 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.:bvr0519:bd04/29/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5N7A-VM:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz 1:0.9.12.2+16.04.20160331-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sat Apr 9 19:49:46 2016 xserver.configfile: default xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.18.3-1ubuntu2 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug freeze kms radeon ubuntu xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1568429 Title: Radeon won't work with KMS enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1568429/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs