Ticket #335 (Invalid)Mon Feb 04 00:59:31 UTC 2013
Keyboard is sluggish, misses keypresses, sometimes does uncommanded repeats
| Reported by: | Andrew Reid (1882) | Severity: | Normal |
| Part: | Release: | ||
| Milestone: | Status | Invalid |
Details by Andrew Reid (1882):
I just discovered Risc OS on the Raspberry Pi, and have installed riscos-2012-11-01-RC6 on a 2G SD card.
Most things are working well, but I am having a lot of trouble with keyboard input. I am seeing symptoms similar to those of Ticket #325, reported by Anders Henschen — with auto-repeat enabled, keypresses sometimes seem to get “stuck”, and some random letter just keeps on going until you hit a key. With or without auto-repeat, keypresses seem to actually work about a third of the time.
I was unable to clear these issues just by restarting, which was how Ticket #325 was resolved.
My keyboard set-up is a slightly unusual, I have a keyboard and mouse connected through a KVM switch, and both input devices come in to the RPi through a single USB connection. I have not (yet) tried bypassing the KVM — the same keyboard and mouse set-up works well with raspian “wheezy” and Arch linux on the same RPi unit.
The keyboard issues occur in all the applications I tried, which includes NetSurf, both in forms and in the address bar, and the task window, and the text editor.
Changelog:
Modified by Andrew Reid (1882) Mon, February 04 2013 - 02:13:04 GMT
Addendum: This problem now seems to have fixed itself somehow. I am in fact typing this from the RPi running RISC OS, and the keyboard is now working fine, even with auto-repeat.
The only thing I did was to try to boot the SD onto another RPi, a 256 MB one (the initial RPi is a 512 MB unit), and it failed, I got weird “disk is empty” messages. Subsequent to that, the RISC OS SD card now works on the 512 MB RPi, and I am unable to reproduce the keyboard problem.
So, apologies for the noise, I guess.
Modified by Andrew Reid (1882) Tue, February 05 2013 - 01:28:56 GMT
- Status changed from Open to Invalid
Did some more experiments, and I’m pre-emptively marking this “Invalid”.
I am still seeing intermittent problems with the keyboard, but they are not consistently reproducible. I thought for a while that I had to boot with the KVM switch connected to have anything work, but I just falsified that one too. It appears to be random.
I have also successfully booted the SD card on two RPi units, with different memory sizes.
I will re-open, or file a new ticket, if I get something reproducible.
