linux-kernel - 3.8: gma500_gfx black screen on LVDS with Intel DN2800MT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <5AD0C87A62ED4C1B8DB0ADBD126F0279@gmail.com>
Date:	Mon, 6 May 2013 11:22:12 +0200
From:	Ivan Stojić <ivans@...econ.com>
To:	linux-kernel@...r.kernel.org
Subject: 3.8: gma500_gfx black screen on LVDS with Intel DN2800MT

Hello!

I've been trying to get gma500_gfx running on Intel's DN2800MT motherboard for an embedded application. The gma500_gfx driver works correctly and without issues when I connect an external monitor on the VGA port, however, if I try connecting it to LVDS display instead, the screen goes black after loading the module. The system works in other aspects (ie I can ssh into the machine and work on it, but I can't get anything on the screen).

Attached are the lspci -vv output and dmesg output after appending drm.debug=0xe to the kernel command line.

I read several mailing list archives, but I wasn't able to find anything similar to this bug that's current - all mentions of similar behaviour are reported to be fixed in >= 3.6.

What's my best course of action here?

Thanks,
-i

Download attachment "lspci-vv.txt" of type "application/octet-stream" (14619 bytes)

Download attachment "dmesg.txt" of type "application/octet-stream" (81158 bytes)