• 10
  • 5月

I met the problem a few days ago and wrote a post on ubuntuforums, but finally I solved it by myself. The relative posts are following:

My laptop is using an ATI x1300 video card. Since I updated my Ubuntu 7.10 to 8.04, I was glad to see that suspending worked well with the new fglix driver.

Unfortunately, from yesterday, I found my laptop can’t resume from suspend suddenly. When I woke up my laptop, my screen backlight turned on and the mouse cursor appeared on screen. But besides the cursor, the screen was all black. And the computer never responded my input (both mouse and keyboard) any more. I had nothing to do but turn off my computer by force.

Since the last successful resuming from suspend, I think the following changes to my system maybe affects:
1.Updated automatically from the main server (I noticed that “hal” was updated).
2.installed “ATI Catalyst Control Center” from the “Add/Remove programs” and changed some sets.
3.modified xorg.conf to enable “DPMS” of the monitor

I have tried to turned all sets to default in the ATI control center and disable DPMS again. All these didn’t work.

here is my pm-suspend.log about resume
Code:

Wed May 7 19:36:20 CST 2008: running resume hooks.
===== Wed May 7 19:36:20 CST 2008: running hook: /usr/lib/pm-utils/sleep.d/99video =====
===== Wed May 7 19:36:20 CST 2008: running hook: /usr/lib/pm-utils/sleep.d/95led =====
===== Wed May 7 19:36:20 CST 2008: running hook: /usr/lib/pm-utils/sleep.d/94cpufreq =====
===== Wed May 7 19:36:20 CST 2008: running hook: /usr/lib/pm-utils/sleep.d/90clock =====
===== Wed May 7 19:36:20 CST 2008: running hook: /usr/lib/pm-utils/sleep.d/50modules =====

Can anyone give me some suggestions? Thank you!

I finally solved the problem myself.

It was the “ATI Catalyst Control Center” who caused all the problem. After restored “/etc/ati/amdpcsdb” from “/etc/ati/amdpcsdb.default”, I can successfully resume from suspend now!

It’s unlucky to have an ATI video card in a linux machine…

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