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Re: Partial Mouse Lockup. New keyboard no response

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On 12.10.2020 17:18, Thomas George wrote:
> 10/12/20. Mouse working perfectly since reboot on 10/6/20 but this
> morning no response from keyboard. Tried ctl-alt-f1 and ctl-alt-f7 but
> no response. Not able to switch workplaces. Continued working in the
> current workspace using the mouse only. Verified mouse and keyboard
> batteries both at 50%. After several switches between open pages the
> keyboard recovered so I could write this.
>
> All this on Ubuntu Studio. Again an intermittent problem. Keyboard
> just stopped working again and recovered after several minutes.
>
> Has anyone else experienced this?
>
> On 10/6/20 2:27 PM, Thomas George wrote:
>> Mouse clicks don't work though mouse moves the pointer.
>>
>> This happens infrequently, once in a day or two. I am using two pc's,
>> a raspberrypi and a Ubuntu Studio each with its own Logitech usb
>> keyboard and have experienced  this problem on both systems.
>>
>> I have tried to recover with various keyboard entries - ctl-c, cti-d,
>> esc, q and by disconnecting and reconnecting the keyboard. Nothing
>> but a reboot solves the problem.  I use ctl-alt-f1 to open a
>> terminal, sign in and enter shutdown -r now to do this. There is no
>> problem with the keyboard.
>>
>> Is this a known problem? Is there a known solution?
>>
>>
>
Taking into account that both devices now exhibit similar behavior, I'd
start by looking into USB power saving functions [1]  and try to disable
them to see if it solves the problem.
That could be done by setting "autosuspend" parameter of kernel module
"usbcore" to a negative integer value (-1).
You can change it temporarily on running system by typing:
    sudo echo -1 > /sys/module/usbcore/parameters/autosuspend
and re-pluging USB device so new settings will be taken into account.

[1] https://www.kernel.org/doc/Documentation/usb/power-management.txt

-- 
With kindest regards, Alexander.

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Partial Mouse Lockup Thomas George <lists@tomgeorge.info> - 2020-10-06 20:40 +0200
  Re: Partial Mouse Lockup Gene Heskett <gheskett@shentel.net> - 2020-10-06 21:30 +0200
  Re: Partial Mouse Lockup <tomas@tuxteam.de> - 2020-10-06 22:00 +0200
    Re: Partial Mouse Lockup Thomas George <lists@tomgeorge.info> - 2020-10-06 22:20 +0200
      Re: Partial Mouse Lockup <tomas@tuxteam.de> - 2020-10-06 23:10 +0200
        Re: Partial Mouse Lockup Weaver <weaver@riseup.net> - 2020-10-06 23:30 +0200
  Re: Partial Mouse Lockup Klaus Singvogel <deb-user-ml@singvogel.net> - 2020-10-06 23:30 +0200
  Re: Partial Mouse Lockup Charles Curley <charlescurley@charlescurley.com> - 2020-10-07 00:50 +0200
  Re: Partial Mouse Lockup Mark Allums <mark@allums.email> - 2020-10-08 06:20 +0200
  Re: Partial Mouse Lockup. New keyboard no response Thomas George <lists@tomgeorge.info> - 2020-10-12 14:30 +0200
    Re: Partial Mouse Lockup. New keyboard no response "Alexander V. Makartsev" <avbetev@gmail.com> - 2020-10-12 17:40 +0200
      Re: Partial Mouse Lockup. New keyboard no response Hans <hans.ullrich@loop.de> - 2020-10-12 18:10 +0200

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