CRB Board Details:
BIOS date 07/08/2010 (core version 184.108.40.206)
1GFX VBIOS version 2044
With libdrm 2.4.21 and xorg-x11-drv-intel-1.12.0 system boots up Huron River CRB and X is running but nothing is displayed on the screen
HP’s problem is that on Huron River they don’t see anything on the screen. The data HP has is the following:
•Updated to 2.6.35-rc6 and needed to add 3 patches in order to get suspend/resume to function problem on HP Cartier platform (calpella based)
•Using vesa driver on Huron River CRB – need to do chvt 1 followed by chvt 2 after suspend/resume to get video back
•With libdrm 2.4.21 and xorg-x11-drv-intel-1.12.0 system boots up Huron River CRB and X is running but nothing is displayed on the screen (monitor doesn’t see a signal)
•Detailed EDID data is showing up under VGA1 but not LVDS1 – is this expected?
No, we expect to get an EDID for the integrated panel as well, so something is clearly amiss and that alone is sufficient for X not to apply any modes to the LVDS.
Can you please add drm.debug=0xe to your boot commandline and upload the dmesg obtained? Thanks.
Created attachment 37853 [details]
output of drm.debug=0xe attached
We have another Huron River CRB and that odd device ID. See blow
Massachusetts CRB board info:
BIOS date 05/05/2010 (core version 220.127.116.11)
IGFX VBIOS version 2024
We get past this bug by issuing the following commands
Xrandr -output LVDS1 -off
Xrandr -output VGA1 -preferred
LVDS port exists on your CRB, but no panel is there, which will cause problem we've seen on many CRB before.
So either attach a panel to LVDS port or disable LVDS for testing, like video=LVDS-1:d
It seems like disabling LVDS doesn't resolve my black screen issue on HuronRiver. I will attach the dmesg and Xorg.0.log output with adding "drm.debug=6" and "video=LVDS-1:d".
Created attachment 37893 [details]
Xorg.0.log output on HuronRiver
Created attachment 37894 [details]
dmesg output on Huron River with disabling LVDS and drm.debug=6
See the comment#4 from email@example.com.
disabling LVDS doesn't resolve the blank screen issue.
Reopening the bug again.
My issue is resolved after upgrading xserver-xorg-video-intel driver to latest.
The workable configuration is:
- Maverick (kernel 2.6.35-19-generic);
- Latest Intel 2D driver (git://anongit.freedesktop.org/git/xorg/driver/xf86-video-intel);
- Huron River Beta SDP;
disabling LVDS worked for us.