carlos palma, thank you for reporting this and helping make Ubuntu better. As per http://www.dell.com/support/home/us/en/19/product- support/product/latitude-e6530/drivers/advanced an update to your computer's buggy and outdated BIOS is available (A17). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, if the problem is still reproducible: 1) Please provide the output of the following terminal command (not perform an apport-collect): sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date 2) Please make a comment specifically advising on if there was an improvement or not. 3) Please mark this report Status Confirmed. If it's not reproducible, please mark this as Invalid. Thank you for your understanding. ** Tags added: bios-outdated-a17 ** Package changed: xorg (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: New => Incomplete -- 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/1535879 Title: It looks to be the (expired ) bug #1451632 drm:intel fifo Status in linux package in Ubuntu: Incomplete Bug description: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1451632/+activity dmesg | grep drm:intel [ 1.441536] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A [ 1.441575] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun Returned back (https://bugzilla.kernel.org/show_bug.cgi?id=79261). It seamed to be fixed up-stream but not for all. Effects on my DELL Precision E6530: without notice it switches from nouveau to nvidia. Switching back to nouveau it hangs (need restart) and OK. Using optimus: 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [NVS 5200M] (rev ff) I'll try to use the upstream kernels and inform ... ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-25.30-generic 4.2.6 Uname: Linux 4.2.0-25-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.19.1-0ubuntu5 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: Tue Jan 19 20:32:03 2016 DistUpgraded: 2015-10-12 20:30:48,655 DEBUG enabling apt cron job DistroCodename: wily DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:0535] NVIDIA Corporation GF108GLM [NVS 5200M] [10de:0dfc] (rev ff) (prog-if ff) InstallationDate: Installed on 2014-05-19 (610 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Dell Inc. Latitude E6530 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-25-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash SourcePackage: xorg UpgradeStatus: Upgraded to wily on 2015-10-12 (99 days ago) dmi.bios.date: 12/13/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 07Y85M dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA09:bd12/13/2012:svnDellInc.:pnLatitudeE6530:pvr01:rvnDellInc.:rn07Y85M:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6530 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Tue Jan 19 18:32:11 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 5553 vendor CMN xserver.version: 2:1.17.2-1ubuntu9.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1535879/+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
