Cgiraud, when you performed the apport-collect you either didn't install
xdiagnose, or you didn't click Yes for attaching additional debugging
information, as requested in
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1576864/comments/3 .
Could you please advise?
** Changed in: xorg (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1576864
Title:
Unable to extend to second display
Status in xorg package in Ubuntu:
Incomplete
Bug description:
Upgrading from UbuntuStudio 15.10 to 16.04, my 2nd display is a no
more a 1st display extension and only a clone. xrand detects only one
display.
$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1400 x 1050, current 1400 x 1050, maximum 1400 x 1050
default connected 1400x1050+0+0 0mm x 0mm
1400x1050 77.00*
$ lspci -nn | grep VGA
00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Sumo [Radeon HD 6410D] [1002:9644]
$ dmesg | egrep 'drm|radeon'
[ 1.293303] [drm] Initialized drm 1.1.0 20060810
[ 1.328085] [drm] VGACON disable radeon kernel modesetting.
[ 1.328109] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon
module!
[ 12.801460] [drm] VGACON disable radeon kernel modesetting.
[ 12.801484] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon
module!
$ uname -r
4.4.0-21-lowlatency
$
Seems same than bug 1407505, but apport-bug failed, so I created a new
bug.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-21.37-lowlatency 4.4.6
Uname: Linux 4.4.0-21-lowlatency x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Apr 29 23:19:49 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-08-21 (252 days ago)
InstallationMedia: Ubuntu-Studio 15.04 "Vivid Vervet" - Release amd64
(20150422)
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to xenial on 2016-04-24 (5 days ago)
---
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CasperVersion: 1.380
CurrentDesktop: XFCE
DistroRelease: Ubuntu 17.04
LiveMediaBuild: Ubuntu-Studio 17.04 "Zesty Zapus" - Release amd64 (20170412)
Package: xorg 1:7.7+16ubuntu3
PackageArchitecture: amd64
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 4.10.0-19.21-lowlatency 4.10.8
Tags: zesty
Uname: Linux 4.10.0-19-lowlatency x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
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