Re: USB keyboard unreliable since dist-upgrade on 1st of June
On Fri, 12 Jun 2015, James Ensor wrote:
> On Fri, Jun 12, 2015 at 6:08 AM, Nicos Gollan <gtdev@spearhead.de> wrote:
> > Since I did a dist-upgrade (running unstable) on 2015-06-01, I'm having a
> > rather annoying issue that the system will seemingly randomly drop keystrokes
> > from my USB keyboard I tried disabling power management for that device, but
> > that doesn't help.
...
> > Any ideas?
...
> I've noticed something similar with my wireless keyboard and mouse.
> It usually happens after waking
> up from suspend. Un-plugging and then re-plugging in the usb rf
> dongle fixes the problem for me though.
> I haven't seen anything in the logs indicating an error or a warning though.
This is usually caused by something enabling USB autosuspend for HID devices
like keyboards and mice.
Google for "autosuspend USB disable", and you will find a lot of info that
could help resolve the issue. Sorry, I cannot detail the procedure right
now.
Sometimes, the culprit is the firmware, and you just have to ensure to
disable autosuspend *again* after resume during boot. If the culprit is
udev, you need to edit the udev rules.
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
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