<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [NVC1] NOUVEAU(0): [drm] failed to set drm interface version" href="https://bugs.freedesktop.org/show_bug.cgi?id=70875#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [NVC1] NOUVEAU(0): [drm] failed to set drm interface version" href="https://bugs.freedesktop.org/show_bug.cgi?id=70875">bug 70875</a> from <a class="email" href="mailto:mszpak@wp.pl" title="Marcin Zajaczkowski <mszpak@wp.pl>"> Marcin Zajaczkowski</a> <pre>Thanks for your reply! This is the first time I try bumblebee mostly to disabled NVidia card to increase a battery work time. It seems I can have a hardware mux. $ xrandr --listproviders Providers: number : 3 Provider 0: id: 0x8e cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 2 outputs: 4 associated providers: 2 name:Intel Provider 1: id: 0x63 cap: 0x7, Source Output, Sink Output, Source Offload crtcs: 2 outputs: 2 associated providers: 2 name:nouveau Provider 2: id: 0x63 cap: 0x7, Source Output, Sink Output, Source Offload crtcs: 2 outputs: 2 associated providers: 2 name:nouveau (I don't know why NVidia card is listed twice) and was able to start glxinfo with both card using Prime as described here: <a href="http://nouveau.freedesktop.org/wiki/Optimus/#usingoptimusprime">http://nouveau.freedesktop.org/wiki/Optimus/#usingoptimusprime</a> A system log section before I installed bumblebee (more complete log attached): kernel: [ 1.703270] VGA switcheroo: detected Optimus DSM method \_SB_.PCI0.PEGR.GFX0 handle kernel: [ 1.703288] nouveau 0000:01:00.0: enabling device (0004 -> 0007) kernel: [ 1.739039] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). kernel: [ 1.739040] [drm] Driver supports precise vblank timestamp query. (...) kernel: [ 2.143215] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 (...) kernel: [ 2.642413] vga_switcheroo: enabled (...) kernel: [ 2.756832] [drm] Initialized nouveau 1.1.1 20120801 for 0000:01:00.0 on minor 1 *With* bumblebee I have later also: kernel: [ 5.951667] bbswitch: module verification failed: signature and/or required key missing - tainting kernel kernel: [ 5.952491] bbswitch: version 0.7 kernel: [ 5.952499] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0 kernel: [ 5.952505] bbswitch: Found discrete VGA device 0000:01:00.0: \_SB_.PCI0.PEGR.GFX0 kernel: [ 5.952518] ACPI Warning: \_SB_.PCI0.PEGR.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20130517/nsarguments-95) kernel: [ 5.952645] bbswitch: detected an Optimus _DSM function kernel: [ 5.952655] bbswitch: Succesfully loaded. Discrete card 0000:01:00.0 is on kernel: [ 5.984317] [TTM] Finalizing pool allocator kernel: [ 5.984324] [TTM] Finalizing DMA pool allocator kernel: [ 5.984564] [TTM] Zone kernel: Used memory at exit: 0 kiB kernel: [ 5.984569] [TTM] Zone dma32: Used memory at exit: 0 kiB kernel: [ 5.984572] vga_switcheroo: disabled kernel: [ 5.986835] [drm] Module unloaded kernel: [ 5.987886] bbswitch: disabling discrete graphics kernel: [ 5.987897] ACPI Warning: \_SB_.PCI0.PEGR.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20130517/nsarguments-95) kernel: [ 5.998773] pci 0000:01:00.0: Refused to change power state, currently in D0 and: xrandr --listproviders Providers: number : 1 Provider 0: id: 0x45 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 2 outputs: 4 associated providers: 0 name:Intel (which is fine if I just want to have NVidia card disabled to increase battery work time) I also tried to use switcheroo to force X server to use discrete graphics after X restart using instructions from: <a href="https://fedoraproject.org/wiki/QA:Testcase_vga_switcheroo">https://fedoraproject.org/wiki/QA:Testcase_vga_switcheroo</a> but I ended with black both screens (even switching to a text console was not visible - an external monitor had not imput signal). kernel: [ 1321.653945] vga_switcheroo: client 1 refused switch kernel: [ 1321.653950] vga_switcheroo: setting delayed switch to client 1 (... - X restart) kernel: [ 1360.615922] vga_switcheroo: processing delayed switch to 1 kernel: [ 1360.615931] vga_switcheroo: client 1 refused switch kernel: [ 1360.616169] vga_switcheroo: processing delayed switch to 1 kernel: [ 1360.764972] fbcon: Remapping primary device, fb0, to tty 1-63 kernel: [ 1360.854562] i915: switched off A complete log from that time period attached. After a restart I checked old Xorg log (attached) and it seems that X server was able to start with nouveau driver without mentioned drm error. In that case maybe you have a suspicion what can cause a mentioned "[drm] failed to set drm interface version" when using bumblebee? The second question could be - Why did I end with black screens after that operation?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>