13.37: Crazy flashing screen after ACPI resume

ndr · 05-06-2011, 08:50 PM

Slackware 13.37 is giving me ugly suspend/resume problems.

When I suspend to RAM and my laptop wakes up again, I get a corrupt screen flashing like crazy.

This happens when I suspend from the console and when in X11; be it by issuing 'echo mem >/sys/power/state' or 'pm-suspend'.

Tried the 'save-pci' quirk for 'pm-suspend', no dice. Tried to POST the card with 'vbetool' after resume, no dice. Tried to save/restore vbestate before and after suspend/resume, no dice.

What is one supposed to do to get this stuff to work in 2011?

Funny thing that suspend-to-disk works as it should.

Also, with 12.2 I would pick a VGA mode for the console in 'lilo.conf' and it would freaking stick. Not anymore. Now the 1st half of the boot is performed in my chosen mode (80x30), then it switches to maximum resolution with an idiotically unsightly small font.

My laptop is an Acer Aspire 5101 with an ATI Radeon 200M card.

Is anyone going thru the same hell or has anyone found a fix?

Thanks in advance.

allend · 05-06-2011, 09:31 PM

Quote:

Now the 1st half of the boot is performed in my chosen mode (80x30), then it switches to maximum resolution with an idiotically unsightly small font.

From CHANGES_AND_HINTS.TXT

Quote:

Now that KMS (Kernel Mode Setting) for graphics cards has (mostly) stabilized,
it is enabled by default for intel, ati, and nvidia graphics chipsets. It
is possible to disable it use "nomodeset" as a kernel append in lilo.conf,
but Xorg will not work at all on intel and ati chips if you do that.

If you want to change the resolution of the KMS console, that can be done
with something like this as a kernel append in lilo.conf:
append="video=1024x768"

Speaking of lilo.conf and KMS, make sure you use either vga=normal or
vga=extended -- some of the framebuffers don't like KMS very much...

Quote:

What is one supposed to do to get this stuff to work in 2011?

Learn to live with KMS.