libGL error: failed to open drm device: Permission denied
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xorg (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
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
ProcVersionSign
Uname: Linux 4.2.0-25-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/
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
ExtraDebuggingI
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=
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-
dmi.product.name: HP ProBook 450 G2
dmi.product.
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.
version.
version.
version.
version.
version.
version.
version.
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
Encountered very similar things (error message usability issue). /bugs.freedeskt op.org/ show_bug. cgi?id= 98163
--> filed improvement suggestion at https:/