Re: suspend/resume fails on second attempt in LNXVIDEO:00
From: Justin P. Mattock
Date: Sun Dec 14 2008 - 10:35:52 EST
Is there quite possibly another
Graphics module you can plug-in,
Just to see
justin P. Mattock
On Dec 14, 2008, at 6:08 AM, "Brian J. Murrell"
<brian@xxxxxxxxxxxxxxx> wrote:
On Sun, 2008-12-14 at 03:16 -0600, Robby Workman wrote:
In linux.kernel, Brian J. Murrell wrote:
I'm trying to debug a resume problem on a compaq presario C700
laptop
on the Ubuntu 2.6.24-22-generic kernel.
SNIPPED
These symptoms mirror a lot of other reports with this machine in
that
the first suspend/resume cycle works but a second attempts
(apparently) suspends fine but fails on resume. The backlight on
the
video does not come back and neither does the wireless connection,
so
I'm not positive the problems are purely video related.
How can I proceed from here to further debug what kind of
workarounds
or solutions I might be able to use to get reliable suspend/resume
functionality?
Assuming Ubuntu uses pm-utils for suspend/hibernate operations,
then I
suspect you're needing this patch - the symptoms fit (suspend works
the first time, but fails thereafter), especially if a reboot causes
suspend to work fine again the first time...
http://cgit.freedesktop.org/pm-utils/commit/?id=6c9f2959a36e608e4d1f71230a9eaaa77940c54e
I wish (and was hoping) it was that simple. The problem is the nature
of that patch really has no effect on my system because $acpi_flag
== 0
when the sysctl on line 147 is applied. Presumably this patch has
more
effect if $acpi_flag != 0, by nature of either $QUIRK_S3_BIOS or
$QUIRK_S3_MODE being == true, neither of which is in my case. Maybe
one
or both should be. I dunno. I'm not sure how these "video quirks"
work.
b.
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