[openchrome-devel] [Bug 106392] blank screen on OpenChrome with VIA VE900

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106392

--- Comment #57 from ptouchman at gmail.com ---
Created attachment 140183
  --> https://bugs.freedesktop.org/attachment.cgi?id=140183&action=edit
xorg on Sansui SLED2900 edid and video then used xrandr to set 1360x768 works


[  3941.894] Kernel command line: BOOT_IMAGE=/vmlinuz-4.9.0-4-686
root=/dev/sdb2 ro quiet drm_kms_helper.edid_firmware=800x600.bin video=800x600e

[  3942.660] (II) CHROME(0): Printing probed modes for output VGA-1
[  3942.660] (II) CHROME(0): Modeline "1360x768"x59.8   84.75  1360 1432 1568
1776  768 771 781 798 -hsync +vsync (47.7 kHz d)
[  3942.660] (II) CHROME(0): Modeline "1152x864"x60.0   81.62  1152 1216 1336
1520  864 865 868 895 -hsync +vsync (53.7 kHz d)
[  3942.660] (II) CHROME(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184
1344  768 771 777 806 -hsync -vsync (48.4 kHz d)
[  3942.660] (II) CHROME(0): Modeline "800x600"x60.3   40.00  800 840 968 1056 
600 601 605 628 +hsync +vsync (37.9 kHz d)
[  3942.660] (II) CHROME(0): Modeline "640x480"x59.9   25.18  640 656 752 800 
480 490 492 525 -hsync -vsync (31.5 kHz d)
[  3942.660] (II) CHROME(0): Output VGA-1 connected
[  3942.660] (II) CHROME(0): Using exact sizes for initial modes
[  3942.660] (II) CHROME(0): Output VGA-1 using initial mode 1152x864 +0+0

Then was able to set the resolution with xrandr

CTRL+ALT+F1 and login

sudo services lightdm stop

startx

(get blank display)

CTRL+ALT+F2 and login

chvt 1; sleep 2; xrandr -d :0 --output VGA-1 --mode 1360x768

[  4011.653] (II) CHROME(0): Modeline "1360x768"x0.0   84.75  1360 1432 1568
1776  768 771 781 798 -hsync +vsync (47.7 kHz)
[  4011.653] (II) CHROME(0): CrtcHDisplay: 0x550
[  4011.653] (II) CHROME(0): CrtcHBlankStart: 0x550
[  4011.653] (II) CHROME(0): CrtcHSyncStart: 0x598
[  4011.653] (II) CHROME(0): CrtcHSyncEnd: 0x620
[  4011.653] (II) CHROME(0): CrtcHBlankEnd: 0x6f0
[  4011.653] (II) CHROME(0): CrtcHTotal: 0x6f0
[  4011.654] (II) CHROME(0): CrtcHSkew: 0x0
[  4011.654] (II) CHROME(0): CrtcVDisplay: 0x300
[  4011.654] (II) CHROME(0): CrtcVBlankStart: 0x300
[  4011.654] (II) CHROME(0): CrtcVSyncStart: 0x303
[  4011.654] (II) CHROME(0): CrtcVSyncEnd: 0x30d
[  4011.654] (II) CHROME(0): CrtcVBlankEnd: 0x31e
[  4011.654] (II) CHROME(0): CrtcVTotal: 0x31e

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