radeon display is blank after resume from S3

radeon display is blank after resume from S3

[Ilya Bagrak]

Hi all,

My set-up is:

Linux 2.6.3-mm2 on Fujitsu E7110 laptop w/
1. radeon mobility 7500 card
2. intel 845 pci bridge (i think)

The basic problem is that after resuming from S3, the screen remains
completely blank.  All other devices seem to return to normal, and I can
communicate with the laptop over the network.  I have experienced this
same problem since early 2.6.0 test kernels, and I've been actively
looking for a solution ever since.

There are few disparate resources here and there like patched radeon
drivers, kernel patches, suspend/resume scripts, etc. that are supposed to
help get this working. I tried them all, and none offer a complete
solution.

I'd very much like to hear from people that have the same card and chipset
and who have managed to revive it after a suspend.  Part of the problem is
that I am not sure what stands in the way of getting this to work.  I am
willing to use the card in some crippled mode, just so the suspend feature
is working properly.  I've tried suspending from X (runlevel 5) and
console (runlevel 3) without much luck.  I've tried vesafb, and various
video modes, but the behavior never changes.

If somebody is aware of some helpful resources or documentation (I've done
my googling already), or personal experiences, I would appreciate your
help very much.

Thank you,

Ilya




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Re: radeon display is blank after resume from S3

[Karol Kozimor]

Thus wrote Ilya Bagrak:
> Linux 2.6.3-mm2 on Fujitsu E7110 laptop w/
> 1. radeon mobility 7500 card
> 2. intel 845 pci bridge (i think)

ASUS L3800C, rest pretty much the same.

> The basic problem is that after resuming from S3, the screen remains
> completely blank.  All other devices seem to return to normal, and I can
> communicate with the laptop over the network.  I have experienced this
> same problem since early 2.6.0 test kernels, and I've been actively
> looking for a solution ever since.

In my case, acpi_sleep=s3_bios is enough. If that doesn't work, you may try
the new radeonfb driver from 2.6.3 -- on my box it *at least* manages to
get the backlight on without having to pass acpi_sleep, but then it screws
up some other things so the laptop gets locked anyway.
Best regards,

-- 
Karol 'sziwan' Kozimor
sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org


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