Public bug reported: I am not sure if it's bug of xserver-xorg or other package. The problem: after reboot everything seems to be fine, scrolling within windows, moving windows are smooth and fast. After some time however everything becomes quite slow, eg output in gnome-terminal which made the content scrolling can bee seen when refreshing, even an editor (like geany) is slow when you move the cursor, moving windows is also slow and "jerky". A reboot (or logging out then in, it seems) cures the problem but after a while problem return. I am not sure if it's related, but /var/log/Xorg.0.log is full of lines like this:
[191341.166] (II) intel(0): switch to mode 1920x1080@60.0 on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none For example now I have 107 lines like this. I am using daily updated Ubuntu 14.10 (32 bit), and it's a problem experienced since some weeks (I can't tell more precisely, sorry), I haven't seen this before, ever. Also, Xorg seems to use quite lot of CPU (according to top), at least more than usual, but it's hard to tell exact numbers. Maybe related: I usually don't switch my computer off. Compiz seems to use more and more memory, according the top it used something like 4% (4Gbyte of RAM) but I also seend something like 22% after some days of uptime. Closing all windows on the desktop seems not to help so it's more like some kind of memory leaking? The only suspect log lines in the kernel log (dmesg): [ 13.493187] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 13.493198] [drm] Driver supports precise vblank timestamp query. [ 13.501309] [drm] Wrong MCH_SSKPD value: 0x20100406 [ 13.501311] [drm] This can cause pipe underruns and display issues. [ 13.501312] [drm] Please upgrade your BIOS to fix this. [ 13.940404] fbcon: inteldrmfb (fb0) is primary device [ 13.940502] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ 13.981857] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 [ 14.802073] [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp off [ 22.099955] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [ 22.099959] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun However no screen corruption etc can be seen, just slowness after a while. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: xserver-xorg 1:7.7+7ubuntu2 ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2 Uname: Linux 3.16.0-29-generic i686 .tmp.unity.support.test.0: ApportVersion: 2.14.7-0ubuntu8.1 Architecture: i386 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: Mon Feb 2 09:15:43 2015 DistUpgraded: 2014-10-24 21:56:36,231 DEBUG enabling apt cron job DistroCodename: utopic DistroVariant: ubuntu DpkgLog: ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0152] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd Device [1458:d000] InstallationDate: Installed on 2014-05-08 (270 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417) Lsusb: Bus 002 Device 003: ID 1267:0213 Logic3 / SpectraVideo plc Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-29-generic root=UUID=c6e12cf5-267b-49d3-83eb-87a1464a2633 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to utopic on 2014-10-24 (100 days ago) dmi.bios.date: 02/25/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: FC dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: H61M-S1 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrFC:bd02/25/2013:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH61M-S1:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1 version.libdrm2: libdrm2 2.4.56-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu0.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu0.1 version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2 xserver.bootTime: Sat Jan 10 09:48:20 2015 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Video Bus KEYBOARD, id 7 input Power Button KEYBOARD, id 8 input PS/2+USB Mouse MOUSE, id 9 input AT Translated Set 2 keyboard KEYBOARD, id 10 xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 1698 vendor SAM xserver.version: 2:1.16.0-1ubuntu1.2 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug compiz-0.9 i386 ubuntu utopic -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1416999 Title: After a while X becomes quite slow Status in xorg package in Ubuntu: New Bug description: I am not sure if it's bug of xserver-xorg or other package. The problem: after reboot everything seems to be fine, scrolling within windows, moving windows are smooth and fast. After some time however everything becomes quite slow, eg output in gnome-terminal which made the content scrolling can bee seen when refreshing, even an editor (like geany) is slow when you move the cursor, moving windows is also slow and "jerky". A reboot (or logging out then in, it seems) cures the problem but after a while problem return. I am not sure if it's related, but /var/log/Xorg.0.log is full of lines like this: [191341.166] (II) intel(0): switch to mode 1920x1080@60.0 on VGA1 using pipe 0, position (0, 0), rotation normal, reflection none For example now I have 107 lines like this. I am using daily updated Ubuntu 14.10 (32 bit), and it's a problem experienced since some weeks (I can't tell more precisely, sorry), I haven't seen this before, ever. Also, Xorg seems to use quite lot of CPU (according to top), at least more than usual, but it's hard to tell exact numbers. Maybe related: I usually don't switch my computer off. Compiz seems to use more and more memory, according the top it used something like 4% (4Gbyte of RAM) but I also seend something like 22% after some days of uptime. Closing all windows on the desktop seems not to help so it's more like some kind of memory leaking? The only suspect log lines in the kernel log (dmesg): [ 13.493187] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 13.493198] [drm] Driver supports precise vblank timestamp query. [ 13.501309] [drm] Wrong MCH_SSKPD value: 0x20100406 [ 13.501311] [drm] This can cause pipe underruns and display issues. [ 13.501312] [drm] Please upgrade your BIOS to fix this. [ 13.940404] fbcon: inteldrmfb (fb0) is primary device [ 13.940502] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ 13.981857] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 [ 14.802073] [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp off [ 22.099955] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A [ 22.099959] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun However no screen corruption etc can be seen, just slowness after a while. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: xserver-xorg 1:7.7+7ubuntu2 ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2 Uname: Linux 3.16.0-29-generic i686 .tmp.unity.support.test.0: ApportVersion: 2.14.7-0ubuntu8.1 Architecture: i386 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: Mon Feb 2 09:15:43 2015 DistUpgraded: 2014-10-24 21:56:36,231 DEBUG enabling apt cron job DistroCodename: utopic DistroVariant: ubuntu DpkgLog: ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller [8086:0152] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd Device [1458:d000] InstallationDate: Installed on 2014-05-08 (270 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417) Lsusb: Bus 002 Device 003: ID 1267:0213 Logic3 / SpectraVideo plc Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-29-generic root=UUID=c6e12cf5-267b-49d3-83eb-87a1464a2633 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to utopic on 2014-10-24 (100 days ago) dmi.bios.date: 02/25/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: FC dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: H61M-S1 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrFC:bd02/25/2013:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH61M-S1:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1 version.libdrm2: libdrm2 2.4.56-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu0.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu0.1 version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2 xserver.bootTime: Sat Jan 10 09:48:20 2015 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Video Bus KEYBOARD, id 7 input Power Button KEYBOARD, id 8 input PS/2+USB Mouse MOUSE, id 9 input AT Translated Set 2 keyboard KEYBOARD, id 10 xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 1698 vendor SAM xserver.version: 2:1.16.0-1ubuntu1.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1416999/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp