Notebook touchpad Kubuntu freeze
D. Michael McIntyre
michael.mcintyre at rosegardenmusic.com
Sat Feb 3 18:56:52 UTC 2007
On Saturday 03 February 2007 8:19 am, FX Fraipont wrote:
> I have tried your suggestion before, but when I launch the kde with
> startx and it freezes, ctrl-alt-delete won't work and I have to reboot
> using the power button, so I never get any hints.
The first thing I wonder is whether this is really a freeze. How much
experience do you have with Linux behaving badly? Would you know the
difference between a total hard freeze and the appearance of a freeze due to
an X11 problem or a disk thrashing problem that renders the system almost but
not quite really frozen?
If you don't know already, some of these things like Ctrl+Alt+F1 to go to
another virtual console might actually take up to several minutes to work, if
for example, some catastrophic memory leak is burning your CPU cycles and
system busses at the max shuffling data to your swap partition.
In addition, I would suggest that since you are having this problem even with
startx, it's time to start trying to do this one small piece at a time. A
KDE system is built out of lots of little pieces, and you can start them one
at a time to narrow down your problem.
To get basic no frills X11 running, begin by running
You should get a hideous moiré pattern background with an X cursor, and an
xterm session at the top left of the screen. Wave the mouse around, and see
if it freezes. Try clicking, and see if it freezes. (If it does, try
Ctrl+Alt+Backspace to kill the X session, and wait at least three minutes
before hitting the power button.)
If that worked, mouse over to the xterm session and give it the focus so you
can type commands there. I usually bring things up in this order:
I'd try mousing around between each stage to see if that component has any
effect on the problem.
If all of this is up, you basically have a working bare bones KDE session.
Does it work?
If you ran into a freeze at any stage of the way, and especially at the bare
bones xinit stage, then I'd start thinking about tinkering with the hardware
config directly. You don't say what suggestions you followed in playing with
xorg.conf. I'd start by disabling the touchpad, enabling only the mouse, and
if that didn't work, I'd switch them around and use only the touchpad. If
that didn't work, and the mouse was definitely the issue, I guess I'd suspect
it was some issue with the vesa driver.
My laptop has a VIA chipset whose video only runs in VESA mode too, and lspci
shows a lot of "unknown chipset" or something to that effect. I eventually
gave up trying to run Linux on that, but not because of anything so dire as
what you're facing.
Anyway, just thoughts off the top of my head. I think I'm going to go out in
the bitter cold and try to take pictures of frozen creeks.
D. Michael McIntyre
More information about the kubuntu-users