Keyboard occasionally endlessly repeating keys
Hi!
After having upgraded my notebook to 2.5.72, I noticed a rare problem, that occurs about twice a day, maybe more. After pressing a key, it gets repeated endlessly until the next key is pressed. When typing fast, it is quite possible to cover up a couple of these, as the repeats appear to happen at the set keyboard rates. Problem never occured with any 2.4 kernel.
I remember having read about this problem on the list before, but didn't search my archive yet. Also, I consider this to be a show stopper, as the bug is already nasty when hitting 'q' inside mutt once and might have worse effects with other programs. YMMV.
Jörn
Signature · 4 lines
Rules of Optimization: Rule 1: Don't do it. Rule 2 (for experts only): Don't do it yet. -- M.A. Jackson
Quoted 11 lines · Jörn Engel
After having upgraded my notebook to 2.5.72, I noticed a rare problem, that occurs about twice a day, maybe more. After pressing a key, it gets repeated endlessly until the next key is pressed. When typing fast, it is quite possible to cover up a couple of these, as the repeats appear to happen at the set keyboard rates. Problem never occured with any 2.4 kernel.
I remember having read about this problem on the list before, but didn't search my archive yet. Also, I consider this to be a show stopper, as the bug is already nasty when hitting 'q' inside mutt once and might have worse effects with other programs. YMMV.
Yes, I know about the problem. I wasn't able to pin it down yet, though. It looks like the keyboard might just 'forget' to send a key release. This is not a problem on 2.4, since 2.4 uses the keyboard hardware autorepeat. 2.5 does autorepeat in software and if the keyboard doesn't send the release, well ...
But it might be a software problem, too. If you want to help, you can run with I8042_DEBUG_IO enabled all the time and send me the log from around the point in time when it happened.
Signature · 2 lines
Vojtech Pavlik SuSE Labs, SuSE CR
Quoted 6 lines · Jörn Engel
After having upgraded my notebook to 2.5.72, I noticed a rare problem, that occurs about twice a day, maybe more. After pressing a key, it gets repeated endlessly until the next key is pressed. When typing fast, it is quite possible to cover up a couple of these, as the repeats appear to happen at the set keyboard rates. Problem never occured with any 2.4 kernel.
Assuming you're still seeing this, does booting w/ "clock=pit" resolve the problem? If so could you send me more info about the system? (is speed step enabled, etc?)
thanks
-john
Quoted 11 lines · john stultz
Quoted 6 lines · Jörn Engel
After having upgraded my notebook to 2.5.72, I noticed a rare problem, that occurs about twice a day, maybe more. After pressing a key, it gets repeated endlessly until the next key is pressed. When typing fast, it is quite possible to cover up a couple of these, as the repeats appear to happen at the set keyboard rates. Problem never occured with any 2.4 kernel.
Assuming you're still seeing this, does booting w/ "clock=pit" resolve the problem? If so could you send me more info about the system? (is speed step enabled, etc?)
Problem appears to be from hardware, Vojtech Pavlik helped me a bit to track it down. Hardware occasionally doesn't send the key release signal after a key pressed signel.
System is IBM Thinkpad R30, CPU permanently running on low speed (700MHz), no speed step (unsupported chipset).
Should I still test w/ clock=pit?
Jörn
Signature · 4 lines
To announce that there must be no criticism of the President, or that we are to stand by the President, right or wrong, is not only unpatriotic and servile, but is morally treasonable to the American public. -- Theodore Roosevelt, Kansas City Star, 1918
Quoted 5 lines · Jörn Engel
Quoted 3 lines · john stultz
Assuming you're still seeing this, does booting w/ "clock=pit" resolve the problem? If so could you send me more info about the system? (is speed step enabled, etc?)
Quoted 8 lines
Problem appears to be from hardware, Vojtech Pavlik helped me a bit to track it down. Hardware occasionally doesn't send the key release signal after a key pressed signel.
System is IBM Thinkpad R30, CPU permanently running on low speed (700MHz), no speed step (unsupported chipset).
Should I still test w/ clock=pit?
Not if its resolved for you. I was just seeing a number of time related keyboard problems on laptops (kbd repeat rates too fast)and wanted to see if you were affected as well.
thanks
-john
Quoted 7 lines · john stultz
Quoted 2 lines · Jörn Engel
Should I still test w/ clock=pit?
Not if its resolved for you. I was just seeing a number of time related keyboard problems on laptops (kbd repeat rates too fast)and wanted to see if you were affected as well.
Not resolved, but understood. The hardware is broken, no doubt about it. 2.5 should be able to deal with the broken hardware just as good as 2.4 was, but Vojtech appears to be working on it. Until then I have to live with my problem. :(
Jörn
Signature · 2 lines
When in doubt, use brute force. -- Ken Thompson