[Nouveau] [Bug 70875] [NVC1] NOUVEAU(0): [drm] failed to set drm interface version

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70875

--- Comment #4 from Marcin Zajaczkowski <mszpak at wp.pl> ---
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:
http://nouveau.freedesktop.org/wiki/Optimus/#usingoptimusprime


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:
https://fedoraproject.org/wiki/QA:Testcase_vga_switcheroo
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?

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