Bug 5069

Summary:	S3 resume: VGA console illegible -- Thinkpad 600X
Product:	ACPI	Reporter:	Sanjoy Mahajan (sanjoy)
Component:	Power-Sleep-Wake	Assignee:	Venkatesh Pallipadi (venki)
Status:	REJECTED INSUFFICIENT_DATA
Severity:	normal	CC:	acpi-bugzilla, bunk
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.13-rc6	Subsystem:
Regression:	---	Bisected commit-id:

Description Sanjoy Mahajan 2005-08-15 11:57:35 UTC

Regression?  No, this hasn't worked since 2.6.11 (when S3 wake/sleep began to
work for me).
Distribution: Debian testing
Hardware Environment: TP 600X, VGA controller: Neomagic Corporation NM2360
[MagicMedia 256ZX]
Software Environment: XFree86 4.3.0

Problem Description: The VGA consoles are mostly illegible after S3 wake. 
During the wake, strange fine-mesh patterns start growing on the screen,
sometimes with colored dots.  Eventually it wakes up (and my wakeup script does
'chvt 1 ; chvt 7' just in case, to help reset the X console) and X is fine.  But
the vga console never recovers.  If I switch to one with ctrl-alt-F1, say, the
text jitters enough to be almost unreadable (though I can do basic sysadmin in a
pinch).  I can live with it, but it would be nice to figure out how to fix it.  

After a swsusp and resume (I don't use it right now until I fix the fan driver,
see Bug #5000), the video card behaves properly.

I tried the s3_bios, s3_mode tricks in Documentation/power/video.txt with no luck.

Steps to reproduce:

Comment 1 Len Brown 2005-08-16 12:48:35 UTC

Likely this is video card and video BIOS dependent.
Unlikely that this can or will be addressed by the kernel.

This is a ThinkPad 600X, yes?  What video hardware has it got?
Can you look into snagging the latest X and/or X video driver for it?

Comment 2 Sanjoy Mahajan 2005-08-16 12:55:10 UTC

> This is a ThinkPad 600X, yes?  What video hardware has it got?

That's right.  From lspci, the video hardware is:

   Neomagic Corporation NM2360 [MagicMedia 256ZX]

> Can you look into snagging the latest X and/or X video driver for it?

Sure, I can try the latest X.org.  But would a different X video
driver X help?  I don't really understand the boundaries between
kernel, bios, and X when it comes to the video card, but the illegible
consoles happen even if I'm not running X (e.g. single user or
runlevel 2).  Is the idea that the X video driver can/will reset the
vga adapter?

Comment 3 Sanjoy Mahajan 2005-08-16 23:39:55 UTC

I just tried Xorg 6.8.2 with the same problem, plus a new one: Now the vga
console does not go completely dark (I can see ghosts of its current state). 
Shutting the lid makes it go dark, but what is it doing before that?

Comment 4 Venkatesh Pallipadi 2005-10-28 17:39:06 UTC

Does the workarouds in Documentation/power/video.txt help in getting around the
test console issue?

Comment 5 Sanjoy Mahajan 2005-10-28 19:01:12 UTC

No -- with earlier kernels (2.6.11-13) I've tried the 4 combinations
for acpi_sleep with s3_bios and s3_mode.  I need s3_bios to get it to
work at all, but s3_mode doesn't help the text console come back.

-Sanjoy

Comment 6 Rafael J. Wysocki 2006-09-29 02:52:30 UTC

Please try to use the s2ram tool (http://en.opensuse.org/S2ram) to solve the
problem.  If that helps, please close the bug.

Comment 7 Adrian Bunk 2006-12-03 09:34:31 UTC

Please reopen this bug if:
- it is still present with kernel 2.6.19 and
- you can provide the requested information.