Forwarding this KMS bug from a Ubuntu reporter: https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/382719 [Problem] On the Q35 chipset, VT switching does not cause a console session to be displayed if KMS is enabled. Works ok if KMS is not enabled. [Original Report] After enabling KMS and installing the xorg-edgers X-version xorg-server 2:1.6.1.901+git20090523+server-1.6-branch.5cd5a012-0ubuntu0sarvatt2 Switching to the virtual terminals doesn't work: When I hit alt+fx the mousecursor disappears, but X remains visible. After hitting alt+f7 again, X is working as if nothing happened. No such problem occured while using the standard jaunty packages. ProblemType: Bug Architecture: amd64 DistroRelease: Ubuntu 9.04 Package: xorg 1:7.4~5ubuntu18 ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersion: Linux version 2.6.30-6-generic (buildd@yellow) (gcc version 4.4.0 (Ubuntu 4.4.0-3ubuntu5) ) #7-Ubuntu SMP Fri May 22 05:15:10 UTC 2009 SourcePackage: xorg Uname: Linux 2.6.30-6-generic x86_64 [lspci] 00:00.0 Host bridge [0600]: Intel Corporation 82Q35 Express DRAM Controller [8086:29b0] (rev 02) Subsystem: Dell Device [1028:0211] 00:02.0 VGA compatible controller [0300]: Intel Corporation 82Q35 Express Integrated Graphics Controller [8086:29b2] (rev 02) Subsystem: Dell Device [1028:0211]
Created attachment 26435 [details] XorgLog.txt
distro: Ubuntu architecture: x86_64 kernel: 2.6.30-6-generic xserver-xorg: 1:7.4~5ubuntu18 mesa: 7.5.0~git20090523+mesa-7-5-branch.1045481d-0ubuntu0sarvatt libdrm: 2.4.11+git20090519.f355ad89-0ubuntu0sarvatt~jaunty -intel: 2:2.7.99.1+git20090601.704771f1-0ubuntu0sarvatt~jaunty
Sounds like the fbcon driver isn't loaded... Try booting into single user mode, doing 'modprobe fbcon; modprobe i915 modeset=1' and see if you can reproduce the problem.
Indeed, if I specify video=fbcon or video=intelfb at boottime, the problems disappear.
Great, thanks for confirming. It's important to load a console driver in the KMS case, otherwise there's nothing to switch to when you VT switch! :)
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