ATI Suspend problems

[trippedn]

Hi there!

Running 10.04 with an ATI HD3400 (fglrx / proprietary drivers) on a Toshiba Satelite m300 laptop. My primary issue is that laptop suspend does not work... sometimes.

On initial boot, suspend works. I can resume from suspend after that. With initial boot, suspend will work on battery, on AC, or while going to suspend and disconnecting AC.

After resuming from suspend, I can usually suspend again, but rarely can I suspend a 3rd or 4th time.

When a suspend fails, what occurs is that the screen turns black but it is still backlit. I cannot switch to any VT and the laptop is hardlocked.

What I would like to know is how to further diagnose suspend problems or maybe someone has a solution?

Thanks for your help!

[trippedn]

Hopeful bump (and subscribe)

[giancarlo76]

The only way I found to make suspend work with my crappy ati xpress 200m is to disable KMS:

echo options radeon modeset=0 > /etc/modprobe.d/radeon-kms.conf

For other info: https://wiki.ubuntu.com/X/KernelModeSetting

Hope this helps!

[trippedn]

The only way I found to make suspend work with my crappy ati xpress 200m is to disable KMS:

echo options radeon modeset=0 > /etc/modprobe.d/radeon-kms.conf

For other info: https://wiki.ubuntu.com/X/KernelModeSetting

Hope this helps!

Hi!

Thanks for the suggestion but fglrx (in its current state) doesn't support KMS yet.

[trippedn]

Well I attempted fiddling with the BIOS settings to see if there was any thing in there that might help.

I tried different settings with the Sleep N' Charge crap. I also disabled the wake from sleep from keyboard and LAN.

Neither of these had an effect. I'll see if there is anything else I can do.

[trippedn]

ALT+SysReq+REISUB does not work either.

[trippedn]

Hi there!

Running 10.04 with an ATI HD3400 (fglrx / proprietary drivers) on a Toshiba Satelite m300 laptop. My primary issue is that laptop suspend does not work... sometimes.

On initial boot, suspend works. I can resume from suspend after that. With initial boot, suspend will work on battery, on AC, or while going to suspend and disconnecting AC.

After resuming from suspend, I can usually suspend again, but rarely can I suspend a 3rd or 4th time.

When a suspend fails, what occurs is that the screen turns black but it is still backlit. I cannot switch to any VT and the laptop is hardlocked.

What I would like to know is how to further diagnose suspend problems or maybe someone has a solution?

Thanks for your help!

Discovered the problem and the fix!

I had a lot of messages about HPET in the kernel log. I tried disabling HPET and now I have suspend abilities all the time with no hanging!

To disable HPET on Ubuntu 10.04:

1. Edit /etc/default/grub
2. Find GRUB_CMDLINE_LINUX and GRUB_CMDLINE_LINUX_DEFAULT and add "hpet=disable" to the list
3. Execute: `sudo update-grub`

Good luck!