apm -s fails with kdm

Ian Goldby · Posted: Sun Mar 09, 2003 12:11 pm Post subject: apm -s fails with kdm

This was working fine yesterday, so I don't know what I've changed to stop it working.

Anyway, I'm in KDE, I bring up a console and type

static_void · Posted: Tue Mar 11, 2003 6:59 am Post subject: Nvidia Driver

If you have an nvidia card with the 3X series drivers, that would cause apm -s to fail in kde, try dropping out of X and in the console type apm -s.....if it works there then it is for sure an nvdiai thing, and you have two options. 1) to patch the nvidia drivers or to update to the 4X series
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Ian Goldby · Posted: Tue Mar 11, 2003 7:55 am Post subject:

The machine is an HP Pavilion with the Intel 810 chipset.

However, I'm looking into whether it could be related to the Low Latency or the Preemptible Kernel patches. It's hard to tell, but I think that maybe the freezing on restore might not happen quite every time. I thought on Sunday that the problem had gone away again, but now it is definitely back (and that was without changing anything).

Sadly, gentoo-sources-2.4.20-r1 won't complete make install_modules if I disable either the Low Latency or the Preemptible Kernel options in my kernel config, so I'm not getting very far. (I get the usual unresolved symbols errors, even after a make mrproper. Even unmerging and remerging the sources doesn't help me.)

static_void · Posted: Tue Mar 11, 2003 8:21 am Post subject: Vanialla sources

Sorry I guess my assumptions were wrong about the nvidia driver. Have you tried the vanilla-sources at all,?
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Ian Goldby · Posted: Tue Mar 11, 2003 11:03 am Post subject:

Vanilla-sources? Good idea. I think that will be my next move. (I'll also try to confirm the unresolved symbols problem with Gentoo-sources and report a bug if I have time.)

This morning, apm -s worked once, and then failed the second time (both from Konsole within KDE), so it does look like there is some 'randomness' there, which might well point to a problem with interrupts/preemptible kernel etc. It also suggests I would have to repeat my experiment using xdm/xterm a few times to know for certain if there is any difference between kdm and xdm - my (one) earlier success with xdm might have been a fluke.

Aagh! I hate rebooting...

Ian Goldby · Posted: Wed Mar 12, 2003 9:01 am Post subject:

Ok, Vanilla sources makes no difference, so that presumably rules out trouble with the kernel patches.

Now what?

static_void · Posted: Wed Mar 12, 2003 11:10 am Post subject: A long shot

This may be a really long shot and I am in no way an authority, but after a recent upgrade to portage itself I looked in the new /etc/make.conf file. And there were two statements in bold:
ATHLON-4 will generate invalid SSE instructions; use athlon insted
PENTIUM4 will generate invalid instructions use pentium3 instead
this is right before the cflags setting, do you think it is possible that something you may have compiled lately which one of the following setting could be causing your current troubles. I personally havn't got a clue as to why apm does not work for you....But I thought I would post this in a last ditch effort....
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Ian Goldby · Posted: Wed Mar 12, 2003 1:16 pm Post subject:

Thanks again for the suggestion.

My processor is a Celeron (Coppermine), so I'm using PENTIUM3 in my compiler flags, as recommended. It could be a make.conf setting though, although quite how I would root out the relevant one I'm not sure. It could also be a problem with xfree 4.3.0, so perhaps downgrading to the latest unmasked version would help. When each test takes >24 hours to do though, it gets a bit frustrating stabbing around in the dark. It's clearly something that changed since my Gentoo 1.2 installation, but that really doesn't rule out very much...

Ian Goldby · Posted: Sun Mar 16, 2003 6:19 pm Post subject:

Well, I've been battling with this for over a week now and made some small progress:

It's nothing to do with kernel config options. I've also tried using ACPI instead of APM, but my BIOS doesn't support enough of ACPI to make it useful.

What I have discovered is this:

If I stop apmd and xdm and issue apm -s from the console, it works everytime, no problem.
If I start kdm manually from the console, apm -s fails, regardless of whether apmd is running. (On one occasion I started kdm and apmd manually and got apm -s to work several times consecutively from a konsole window, but I haven't managed to repeat this.)
If I execute startx, or start xdm and log in, if I then bring up an xterm, apm -s works 100% reliably.
If I use kdm, but ask for an Xsession (with twm) rather than KDE, apm -s works 100% reliably. I can bring up konqueror, konsole, etc, suspend, resume, no problems - just a lousy window manager!

So it looks like it is not a problem with X or xfree, but something related to KDE, and specifically, perhaps the window manager -- the common thread is that apm -s always works when I'm not running KDE's own window manager.

static_void · Posted: Sun Mar 16, 2003 8:15 pm Post subject: Hey

Sorry I could not have been of more help....have you tried installing and other window managers....mayber something small (Well Everything is small compared to KDE) and see if the same problem persists?
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juliancode · Posted: Sun Mar 16, 2003 8:42 pm Post subject:

i solved my gentoo-sources compile problem by removing the /lib/modules/2.4.20-gentoo-r1 directory. might help.

MyZelF · Posted: Tue Mar 25, 2003 10:56 pm Post subject:

Don't know if this will help you, but I have a similar problem (XFree 4.3.0 hangs on kdm logout) and I noticed that this occurs only if the kernel DRI module is loaded. Disabling DRI solves that for me.

Ian Goldby · Posted: Sat Apr 05, 2003 5:24 pm Post subject:

First, sorry I have not responded for several weeks. I've been trying to sort out some other Gentoo problems. Anyway, back to apm: