Forwarding a bug report from Ubuntu user Glen Ditchfield: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/589940 This is possibly a duplicate of fdo bug #28070. Problem: Laptop monitor shows boot messages but turns black when gdm/kdm is started. It seems that the laptop monitor is connected on DP1: DP1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 309mm x 173mm 1366x768 60.1*+ 40.1 From intel_reg_dumper: PCH_eDP_A: 0xb0854004 This is with Ubuntu 10.10 kernel 2.6.35-2.3-generic based on 2.6.35-rc2. Original bug report: I made a USB key and booted an HP Elitebook 8440p model WH255UT#ABA. (Chipset: Mobile Intel QM57 Express, graphics: Intel Graphics Media Accelerator HD.) I selected "Try Kubuntu without installing". The screen flashed repeatedly, then showed a blinking underscore cursor, then turned black. After some seconds I heard the KDE start-up sound, but the screen stayed black. Ctrl-Alt-F1 did nthing. With "splash" removed from the boot options, the result was the same. Architecture: i386 DistroRelease: Ubuntu 10.10 MachineType: Hewlett-Packard HP EliteBook 8440p Package: xserver-xorg-video-intel 2:2.11.0-1ubuntu2 ProcVersionSignature: Ubuntu 2.6.35-2.3-generic 2.6.35-rc2 Uname: Linux 2.6.35-2-generic i686 dmi.bios.date: 12/22/2009 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68CCU Ver. F.02 dmi.board.name: 172A dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 30.29 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68CCUVer.F.02:bd12/22/2009:svnHewlett-Packard:pnHPEliteBook8440p:pvr:rvnHewlett-Packard:rn172A:rvrKBCVersion30.29:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP EliteBook 8440p dmi.sys.vendor: Hewlett-Packard system: distro: Ubuntu codename: maverick architecture: i686 kernel: 2.6.35-2-generic
Created attachment 36448 [details] video bios dump
Created attachment 36449 [details] dmesg with drm.debug=0x04
Created attachment 36450 [details] output of intel_reg_dumper
Created attachment 36451 [details] output of xrandr --verbose
Created attachment 36452 [details] Xorg.0.log
Created attachment 36453 [details] lspci -vvnn
here is a new patch on the intel-gfx mailing list today that may fix this. http://lists.freedesktop.org/archives/intel-gfx/2010-June/007216.html
Should have been fixed by https://patchwork.kernel.org/patch/108727/ which is in drm-intel-next now
(In reply to comment #8) > Should have been fixed by > https://patchwork.kernel.org/patch/108727/ > which is in drm-intel-next now Indeed. It is even in -rc4. Glen just tested an -rc4 based Ubuntu kernel and reports the problem is resolved.
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