Mailinglist Archive: radeonhd (699 mails)

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[radeonhd] xrandr switch mode fails
  • From: Thomas Meyer <thomas@xxxxxxxx>
  • Date: Sat, 24 Nov 2007 12:21:02 +0100
  • Message-id: <4748091E.9060107@xxxxxxxx>
Hi.

with ce2607d1f534a2008cdcbd14c805074355647a8e:


Part 1:

I start the X server with an external monitor connected:

$ xrandr -q
Screen 0: minimum 320 x 200, current 1440 x 960, maximum 1600 x 1600
PANEL/LVDS unknown connection 1440x900+0+0 0mm x 0mm
1440x900 60.0*
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A connected 1280x960+0+0 330mm x 270mm
1600x1024 60.0
1280x1024 59.9 60.0
1280x960 60.0*
1024x768 60.0 59.8
800x600 60.3 59.9
640x480 60.0 59.9

Then I do:
$ xrandr --output PANEL/LVDS --off

$ xrandr -q
Screen 0: minimum 320 x 200, current 1280 x 960, maximum 1600 x 1600
PANEL/LVDS unknown connection
1440x900 60.0
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A connected 1280x960+0+0 330mm x 270mm
1600x1024 60.0
1280x1024 59.9 60.0
1280x960 60.0*
1024x768 60.0 59.8
800x600 60.3 59.9
640x480 60.0 59.9

$ xrandr --output DVI-I_1/TMDS_A --mode 1280x1024
xrandr: Configure crtc 1 failed

Is this a normal behavoiur?

Part 2a:
I start the Xserver without an external monitor connected:
$ xrandr -q
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1440 x 1440
PANEL/LVDS unknown connection 1440x900+0+0 0mm x 0mm
1440x900 60.0*
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A disconnected

Connect the monitor:
$ xrandr -q
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1440 x 1440
PANEL/LVDS unknown connection 1440x900+0+0 0mm x 0mm
1440x900 60.0*
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A connected
1280x1024 59.9 60.0
1280x960 60.0
1024x768 60.0 59.8
800x600 60.3 59.9
640x480 60.0 59.9

Switch off PANEL:
$ xrandr --output PANEL/LVDS --off

$ xrandr -q
Screen 0: minimum 320 x 200, current 320 x 200, maximum 1440 x 1440
PANEL/LVDS unknown connection
1440x900 60.0
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A connected
1280x1024 59.9 60.0
1280x960 60.0
1024x768 60.0 59.8
800x600 60.3 59.9
640x480 60.0 59.9

Both screens are black now.

Ok let xrandr autoconfigure again:

$ xrandr --auto
xrandr: Configure crtc 0 failed

Part 2b:

I start the Xserver without an external monitor connected:
$ xrandr -q
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1440 x 1440
PANEL/LVDS unknown connection 1440x900+0+0 0mm x 0mm
1440x900 60.0*
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A disconnected

Connect the monitor:
$ xrandr -q
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1440 x 1440
PANEL/LVDS unknown connection 1440x900+0+0 0mm x 0mm
1440x900 60.0*
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A connected
1280x1024 59.9 60.0
1280x960 60.0
1024x768 60.0 59.8
800x600 60.3 59.9
640x480 60.0 59.9

Switch off PANEL:
$ xrandr --output PANEL/LVDS --off

$ xrandr -q
Screen 0: minimum 320 x 200, current 320 x 200, maximum 1440 x 1440
PANEL/LVDS unknown connection
1440x900 60.0
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A connected
1280x1024 59.9 60.0
1280x960 60.0
1024x768 60.0 59.8
800x600 60.3 59.9
640x480 60.0 59.9

Both screens are black now.

set mode for DVI-I_1/TMDS_A:
$ xrandr --output DVI-I_1/TMDS_A --mode 1280x1024
Configure crtc 0 failed

Why "crtc 0"?

$ xrandr -q
Screen 0: minimum 320 x 200, current 320 x 200, maximum 1440 x 1440
PANEL/LVDS unknown connection
1440x900 60.0
DVI-I_1/DAC_B disconnected
DVI-I_1/TMDS_A connected
1280x1024 59.9 60.0
1280x960 60.0
1024x768 60.0 59.8
800x600 60.3 59.9
640x480 60.0 59.9

mfg
thomas


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