F11 Preview Hard Lock

Tom London selinux at gmail.com
Wed Apr 29 15:42:45 UTC 2009

On Wed, Apr 29, 2009 at 7:31 AM, Adam Jackson <ajax at redhat.com> wrote:
> On Wed, 2009-04-29 at 06:26 -0700, Tom London wrote:
>> My @home monitor does not support KMS; I'll retest with my "KMS
>> approved" monitor @work.
> Can you clarify this statement?  The monitor really shouldn't factor
> into whether KMS works or not.  Admittedly there's been some bugs with
> the I2C code in the kernel (turns out KMS is the first serious user of
> it, who knew), but X's mode selection logic is independent of who does
> I2C.
> - ajax

I've BZ'ed here: https://bugzilla.redhat.com/show_bug.cgi?id=489987

Rough details: I connect my X200 at home with an old Mitsubishi LCD
monitor, and at work with a newer HP LCD monitor.

System boots fine with HP monitor and KMS (that is, plymouth displays
properly and gdm/X "comes up" fine), but does not with Mistubishi LCD
(plymouth displays properly, but the monitor immediately goes into
"power save" mode and the screen turns black when gdm should be

To make it "work", I need to add "nomodeset nopat" when booting with
Mitsu. monitor.

I believe the "nopat" was needed to make compiz not display the "white
screen of indifference"

Believe various Xorg.0.log files are attached there.

I'm eager to help here.  Let me know what more I do....

Tom London

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