CRB Board Details: PBA E73564-002 BIOS date 07/08/2010 (core version 4.6.3.2) 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) •http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commitdiff;h=4a655f043160eeae447efd3be297b6b4c397a640 •http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commitdiff;h=9934c132989d5c488d2e15188220ce240960ce96 •http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commitdiff;h=5620ae29f1eabe655f44335231b580a78c8364ea •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: PBA E73564-202 BIOS date 05/05/2010 (core version 4.6.3.2) 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 yingying.zhao@intel.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; Thanks, Yingying
disabling LVDS worked for us. Thanks, Manjeet
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