https://bugzilla.kernel.org/show_bug.cgi?id=34252 Summary: Unexpected behaviour when switching video cards with vga_switcheroo Product: Drivers Version: 2.5 Kernel Version: 2.6.39-rc5+ (1be6a1f89f131e9c3d22f819ec542be9cda8c9e3) Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx ReportedBy: e-mail@xxxxxxx CC: alexdeucher@xxxxxxxxx Regression: Yes Created an attachment (id=56262) --> (https://bugzilla.kernel.org/attachment.cgi?id=56262) Kernel config Trying to setup script, that switches video cards, I ran into the situation when I left with a black screen not possible to do anything with the system. Here is an example: # cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:Pwr:0000:01:05.0 1:DIS: :Pwr:0000:02:00.0 # echo IGD > /sys/kernel/debug/vgaswitcheroo/switch # cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:Off:0000:01:05.0 1:DIS: :Pwr:0000:02:00.0 I think that this behaviour is buggy and this should not happen. Environment: # lspci | grep -i vga 01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] 02:00.0 VGA compatible controller: ATI Technologies Inc M93 [Mobility Radeon HD 4500 Series] # uname -a Linux garik-laptop 2.6.39-rc5+ #8 SMP Sat Apr 30 18:36:12 MSD 2011 x86_64 AMD Athlon(tm) Neo Processor MV-40 AuthenticAMD GNU/Linux -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd -- _______________________________________________ Dri-devel mailing list Dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/dri-devel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
