|Summary:||Blank screen with KMS enabled (on clevo M5xN laptop)|
|Product:||ACPI||Reporter:||Jérémy Lal (kapouer)|
|Component:||Other||Assignee:||Zhang Rui (rui.zhang)|
|Severity:||normal||CC:||lenb, rjw, rui.zhang|
|Bug Depends on:|
clevo M550N acpidump
patch: blacklist Clevo M5x0N for LVDS detection
Description Jérémy Lal 2010-01-22 20:30:39 UTC
Hi, acpi lid status thinks it's closed when booting the laptop (every time). - /proc/acpi/button/lid/LID/state is updated correctly when closing/opening - it's the initial value given by acpi when powered on that is wrong - no troubles on suspend/resume So my workaround is to close/reopen it during before kernel loading. I guess it could be eligible to the same fix as the one described in Bug 14957 dmidecode attached. Regards.
Comment 2 Zhang Rui 2010-01-26 08:16:14 UTC
no, this seems to be a different problem. the laptops in that bug report can not report the correct lid state all the time. please attach the acpidump of your laptop.
Comment 3 Jérémy Lal 2010-01-26 09:13:26 UTC
Created attachment 24713 [details] clevo M550N acpidump
Comment 4 Zhang Rui 2010-01-27 01:28:40 UTC
Created attachment 24740 [details] patch: blacklist Clevo M5x0N for LVDS detection well, you're right. The root cause of this problem is that BIOS reports incorrect(uninitialized) Lid state. I read the acpidump of your laptop and find that it's hard to fix the problem in Linux kernel, so we need the same solution as we do in bug #14957. Patch attached. please give it a try.
Comment 5 Zhang Rui 2010-01-27 01:29:27 UTC
please re-open this bug if the patch in comment #4 doesn't work for you.
Comment 6 Rafael J. Wysocki 2010-02-05 22:29:24 UTC
Handled-By : Zhang Rui <email@example.com> Patch : http://bugzilla.kernel.org/attachment.cgi?id=24740
Comment 8 Len Brown 2010-02-19 04:27:59 UTC
shipped in linux-2.6.33-rc8-git4 sent to linux-2.6l.32.stable closed.
Comment 9 Jérémy Lal 2010-03-04 07:45:41 UTC
i confirm the patch is working on 2.6.33