Created attachment 41485 [details] dmesg file System Environment: -------------------------- Arch: x86-64 Platform: capella Libdrm: (master)2.4.23-4-gbad5242a59aa8e31cf10749e2ac69b3c66ef7da0 Mesa: (7.10)1988cba847386f5e03703137136c4fee08318ba2 Xserver: (server-1.9-branch)xorg-server-1.9.3-10-g295a893aa3b594f9e0fb154bff14e12514b4dad5 Xf86_video_intel:(master)2.13.902-11-g7667ad8432c032aec3a2aa004fc4dfc1877971b3 Kernel: (drm-intel-fixes) 4d3024428f5c3ef5295e6f6fb257ae118b3f93a1 Bug detailed description: ------------------------- My capella is ThinkPad T410. Black screen happens on it when kernel boot-up. We can ping it and ssh into the system. The problem doesn't happen on another capella(DELL e6510 with EDP). Bisect shows the first bad commit is commit 448f53a1ede54eb854d036abf54573281412d650. Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Tue Dec 14 20:06:20 2010 +0000 drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks Fixes the lack of output on the LVDS panel of the Lenovo U160. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31596 Reported-and-tested-by: Dirk Gouders <gouders@et.bocholt.fh-gelsenkirchen.de> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reproduce steps: ---------------- 1. Restart system 2. Screen goes to blank screen when kernel boot-up.
Created attachment 41500 [details] vbios.dump
Created attachment 41501 [details] intel_reg_dumper
I've queued the revert for -fixes: commit bcfbbce822d219eb587acaba8a6e062bbeae4761 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Thu Dec 30 09:07:15 2010 +0000 Revert "drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks" As I feared, whilst this fixed the clocks for the Lenovo U160, it broke many other machines. So lets reverts commit 448f53a1ede54eb854d036abf and search for the real bug. Reported-and-tested-by: Travis Hume <travis@computoring.org> [et al] Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=25842 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32698 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Verified with Kernel(drm-intel-next) a9ac4ef59da8cb3c2990bb0bd4fcbaa9094c6ac6 and Kernel(drm-intel-fixes) 3643e0e87c13c670a0fdcd0c34401b38b36ff021.
Verified->Closed.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.