Manual and options for the "modesetting" driver
Stefan Monnier
monnier at iro.umontreal.ca
Fri Jun 19 06:55:38 PDT 2015
> I do
> $ xrandr --setprovideroutputsource 1 0
IIUC this is to tell one GPU to render into another card's framebuffer.
I don't have any GPUs, I only have framebuffers (well, Poulsbo does
include a GPU, but I have no driver for that part).
In any case, it fails (and it doesn't solve my gdm-rotation problem either):
% DISPLAY=:0 xrandr
Screen 0: minimum 320 x 200, current 1200 x 1600, maximum 4096 x 4096
DVI-0 connected 1200x1600+0+0 left (normal left inverted right x axis y axis) 432mm x 324mm
1600x1200 60.00*+ 54.88
1280x1024 75.02 60.02
1280x960 60.00
1152x864 75.00
1024x768 75.08 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00
720x400 70.08
% DISPLAY=:0 xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x77 cap: 0x0 crtcs: 2 outputs: 1 associated providers: 0 name:modesetting
Provider 1: id: 0x41 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 0 name:modesetting
% DISPLAY=:0 xrandr --setprovideroutputsource 1 0
X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 35 (RRSetProviderOutputSource)
Value in failed request: 0x77
Serial number of failed request: 16
Current serial number in output stream: 17
-- Stefan
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