Encountered very similar things (error message usability issue). --> filed improvement suggestion at https://bugs.freedesktop.org/show_bug.cgi?id=98163
** Bug watch added: freedesktop.org Bugzilla #98163 https://bugs.freedesktop.org/show_bug.cgi?id=98163 -- 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/1539046 Title: libGL error: failed to open drm device: Permission denied Status in xorg package in Ubuntu: New Bug description: After some update (unfortunately I'm not sure what) if I try to play a videofile (e.g. mpv movie.mkv) I get this error: libGL error: failed to open drm device: Permission denied I think from this message is not very clear why is that. I figured out I was not in "video" group: "id user_name" I had to do this: "usermod -aG video user_name " and then restart X (logout, login). After that it works again. So I suspect there is some problem there. Why libGL cannot be used without membership in video group or why a regular user is not in video group. 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 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Thu Jan 28 12:54:51 2016 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu DkmsStatus: fglrx-core, 15.201, 4.2.0-25-generic, x86_64: installed ExtraDebuggingInterest: I just need to know a workaround GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device [103c:2248] InstallationDate: Installed on 2015-10-23 (96 days ago) InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: Hewlett-Packard HP ProBook 450 G2 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-25-generic root=UUID=c9e0c6ee-c8a4-4d1a-a46e-a3b79c38f774 ro SourcePackage: xorg Symptom: display UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/26/2015 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: M74 Ver. 01.16 dmi.board.name: 2248 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 67.24 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrM74Ver.01.16:bd11/26/2015:svnHewlett-Packard:pnHPProBook450G2:pvrA3008CD10003:rvnHewlett-Packard:rn2248:rvrKBCVersion67.24:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP ProBook 450 G2 dmi.product.version: A3008CD10003 dmi.sys.vendor: Hewlett-Packard version.compiz: compiz N/A 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 1:1.0.11-1ubuntu3 xserver.bootTime: Wed Jan 27 22:49:34 2016 xserver.configfile: /etc/X11/xorg.conf xserver.errors: Screen 1 deleted because of no matching config section. xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 1125 vendor LGD xserver.version: 2:1.17.2-1ubuntu9.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1539046/+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
