Red Hat Bugzilla – Bug 90592
ThinkPad T40 Hangs On Resume
Last modified: 2015-01-07 19:05:00 EST
Description of problem:
I just laid hands on an IBM ThinkPad T40. About half the time I suspend it from
Linux, when I resume, it locks up. Sometimes I see X-Windows but I am unable to
type or interact with it in any way. Some times the screen backlight turns on
but nothing is displayed. In either case, it does not respond to
Crtl-Alt-Backspace or Ctrl-Alt-Delete.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Start X-Windows
2. Open Terminal
3. su root
4. apm -s
5. Close laptop
6. Open laptop
7. Laptop attempts to resume
either backlight turns on but nothing is displayed, or X-Windows desktop appears
but I am unable to interact with it.
System is usable
Is screen blanking turned on in the BIOS? Try turning it off, if so.
Actually, the problem seemed to be resolved by unloading the sound driver during
suspend and reloading during resume. The flag for this in /etc/sysconfig/apmd
worked for this except the sound driver (i810_audio) needed to be added to the
list of sound modules.
On a related note, I have noticed that screen blanking causes terminal problems
with the Red Hat 9 installer (once blanked, it never wakes up again), but I
guess that's a different issue.
Oh, *YUK*. A hardcoded list of sound modules? That's so broken.
Fixed better in 3.0.2-19.