Zarhan
Veteran
Joined: 27 Feb 2004
Posts: 1016
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 Posted: Tue Dec 28, 2004 10:08 pm Post subject: Corrupt video on resume & PNP-ACPI - Thinkpad 600 |
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Hi,
To my joy, I noticed that on my Thinkpad 600E, the sleepstates (most notably S3) finally work with the 2.6.10 kernel (I think this was mostly due to a typo in DSDT, ie. BIOS uses _S3 when there should be \_S3 - but now the kernel takes this into account).
So, I made the switch from APM to ACPI (because now I get to use all those Fn+keys to suspend, and the battery gauge is more accurate). However, two problems persist..both of them regarding suspend/resume sequence.
One is that when I resume, the video is corrupt. If I'm on console, I cannot get anything on the screen, it's just kinda fuzzy (which is odd-looking on an LCD). If I have X active and suspend+resume, the fuzzy screen is there, but when I switch to console (Ctrl+alt+f1) I get a console that is only somewhat corrupt (ie. pieces of text here and there). When I switch back to X tty (Ctrl+alt+f7) everything is fine. Console stays corrupt.
I can remove the corruptness from the console by switching to external display for a second (even if one is not connected) by pressing Fn+F7.
Is there some utility that I can use to re-initialize video card entirely?
Another problem is related to PNP. With APM, I have the following in my /etc/apm/event.d:
| Code: |
#!/bin/sh
case "$1" in
resume)
setpnp 0e on
setpnp 0f on
/etc/init.d/alsasound start
;;
suspend)
/etc/init.d/alsasound stop
;;
esac
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This is to unload ALSA modules on suspend, reload them on resume, and what is most important, re-activate the sound hardware on resume (it's an ISA PnP device, CS4236 - for some reason the CS46xx driver does not work). The sound works perfectly before first suspend.
With ACPI, the /proc/bus/pnp interface is not there anymore, so setpnp and lspnp do not work.
However, I can find a directory /sys/devices/pnp0/00:0e that has different stuff listed...
So, the question is: How can I perform the functionality of "setpnp 0e enable", using only the sysfs interface to PNP? |
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Kernel & Hardware
