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): kernel-3.4.20-9 apmd-3.0.2-18 How reproducible: 50% 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 Actual results: either backlight turns on but nothing is displayed, or X-Windows desktop appears but I am unable to interact with it. Expected results: System is usable Additional info:
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.