Re: Keys get stuck


On Thu, 2008-03-13 at 11:48 +0200, Jan Knutar wrote:
On Thursday 13 March 2008 07:42, Mike Galbraith wrote:

Just for the record, this problem started with openSUSE 10.2 for
me, that's a 2.6.18 thingy. I'm a heavy xterm user, where the
autorepeat gets a life of its own _occasionally_. I'm able to stop
it by triggering a autorepeat manually (typical antidot reaction).

I've seen these key repeats for years. All I ever had to do was to
make X run heavily enough in the presence of another (hefty) load
that it hits the expired array and thereby takes a serious latency
hit. I always considered key repeats under load to be X's quaint way
of saying "HEEEEELP MEEEE" ;-)

I experience random repeats during heavy loads such as yum upgrade,
which triggers a huge swapout, in Fedora Core 7 with Fedora's
2.6.23.14-64 on amd64, Xorg 1.3... Using USB keyboard.

Hm, dunno what all is in that kernel. Huge swapout with yum upgrade
shouldn't be happening I don't think, upgrades here certainly don't (I'm
using suses upgrade dohickey though...). I can only recommend trying
latest/greatest stock kernel.

I'm not sure if it's the same issue or not, they don't repeat "forever"
for me, it just makes my speeellllliingggg llllooookkk
teerrriibbblle. Like that. Before this happens, letters usually stop
appearing on screen as I'm typing. I usually stop typing at that point,
since I know it will just become a mess.

Yes, that's the symptom I was refering to. If you see that under
reasonable CPU load, and _without_ major swapping going on, then I'd be
suspicious of scheduler trouble. Swap can definitely keep X off the cpu
for extended periods, and that seems to be what triggers the repeated
keys behavior. (I've never troubleshot it, so must say _seems_)

-Mike

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