Screen off after resume on desktop

[Tim Richardson]

I have Ubunutu 6.10.
acpid -v = 1.0.4

the package version of acpisupport is 0.90

On resume, my screen (a generic LCD monitor) is blank. That is, it is still off.
The rest of the machine is alive. On resume, the monitor briefly wakes up, to report "no video" followed by "power save" and then it sleeps. At this point, I must reboot the machine, although I have to admit I have not tried doing anything by remotely logging on.

The screen does turn off if the machine is left inactive, and correctly wakes up if the mouse is moved.

I have tried experimenting with settings in /etc/default/acpi-support
such as turning off POST_VIDEO but nothing fixes the problem.
Since I don't understand these settings, I can not really be very intelligent about debugging steps.

I hope someone can suggest a way for me to triage the bug/problem.

[Timothy Smith (tas50)]

What video chipset are you using. There is a fixed bug in the Xorg Intel driver that causes blank screens after resumes.

[Tim Richardson (tim-richardson)]

Nvidia legacy driver, GeForce MX 440

However, I think it is a much bigger problem, not related to video. I can't ssh or ping the machine after resume, and I modified /etc/acpi/resume.sh to log a message as it runs each script, but the log file seems to indicates no activity of any kind after a resume.

[Pedro Martinez-Julia (pedromj)]

The fail can be related to a kernel hang due to Nvidia's resuming.

I couldn't resume in dapper (before the final release) and it was the
video card. When resuming the system was frozen (no keyboard, no work of
the first line after "echo mem > /sys/power/state").

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[Matthew Garrett (mjg59)]

Probably a bug in the nvidia drivers

[Timo Aaltonen (tjaalton)]

Ubuntu 6.10 is obsolete by now, so closing the bug as WONTFIX.