Public bug reported: drm:cpt_set_fifo_underrun_reporting] ERROR uncleared pch fifo underrun on pch transcoder A [drm:cpt_serr_int_handler] ERROR PCH transcoder A FIFO underrun
during startup it gives this error and continue working . i can use ubuntu but whats the reason behind this error ? ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia wl .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 361.42 Tue Mar 22 18:10:58 PDT 2016 GCC version: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.2) .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Fri Oct 14 17:11:27 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:3902] NVIDIA Corporation GF108M [GeForce GT 635M] [10de:0de3] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Lenovo GF108M [GeForce GT 635M] [17aa:3902] InstallationDate: Installed on 2016-10-07 (6 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: LENOVO IdeaPad Z580 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-38-generic root=UUID=fc2fc1f1-7700-4c16-b83d-ed23d95063a2 ro quiet splash SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/20/2012 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 5FCN91WW dmi.board.asset.tag: No Asset Tag dmi.board.name: Lenovo dmi.board.vendor: LENOVO dmi.board.version: 31900004WIN8 STD SGL dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Z580 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr5FCN91WW:bd09/20/2012:svnLENOVO:pnIdeaPadZ580:pvrLenovoZ580:rvnLENOVO:rnLenovo:rvr31900004WIN8STDSGL:cvnLENOVO:ct10:cvrLenovoZ580: dmi.product.name: IdeaPad Z580 dmi.product.version: Lenovo Z580 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2 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+git20160325-1ubuntu1.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Fri Oct 14 17:02:15 2016 xserver.configfile: /etc/X11/xorg.conf xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.3-1ubuntu2.2 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug compiz-0.9 false-gpu-hang freeze ubuntu xenial -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1633496 Title: boot screen give this Status in xorg package in Ubuntu: New Bug description: drm:cpt_set_fifo_underrun_reporting] ERROR uncleared pch fifo underrun on pch transcoder A [drm:cpt_serr_int_handler] ERROR PCH transcoder A FIFO underrun during startup it gives this error and continue working . i can use ubuntu but whats the reason behind this error ? ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia wl .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 361.42 Tue Mar 22 18:10:58 PDT 2016 GCC version: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.2) .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Fri Oct 14 17:11:27 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:3902] NVIDIA Corporation GF108M [GeForce GT 635M] [10de:0de3] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Lenovo GF108M [GeForce GT 635M] [17aa:3902] InstallationDate: Installed on 2016-10-07 (6 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: LENOVO IdeaPad Z580 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-38-generic root=UUID=fc2fc1f1-7700-4c16-b83d-ed23d95063a2 ro quiet splash SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/20/2012 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 5FCN91WW dmi.board.asset.tag: No Asset Tag dmi.board.name: Lenovo dmi.board.vendor: LENOVO dmi.board.version: 31900004WIN8 STD SGL dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Z580 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr5FCN91WW:bd09/20/2012:svnLENOVO:pnIdeaPadZ580:pvrLenovoZ580:rvnLENOVO:rnLenovo:rvr31900004WIN8STDSGL:cvnLENOVO:ct10:cvrLenovoZ580: dmi.product.name: IdeaPad Z580 dmi.product.version: Lenovo Z580 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2 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+git20160325-1ubuntu1.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Fri Oct 14 17:02:15 2016 xserver.configfile: /etc/X11/xorg.conf xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.3-1ubuntu2.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1633496/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp