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#1 2021-01-06 15:01:20

toothandnail
Member
From: Oxfordshire, UK
Registered: 2012-05-05
Posts: 81

mouse pointer freeze Thinkpad T450 with Linux 5.10.4

I have a couple of Thinkpads running Arch - a T430s and a newer T450s. The 430 is fine with the latest kernel, but the 450 is anything but.

I saw a few problems with 5.10.3, but they were not constant - usually rebooting would clear them, With 5.10.4, nothing helps...

Initially, when lightdm started, it was running in a very low resolution mode (the 450 is 19200x1080 native, but was coming up in what looked like 640x480). If I completed the login, the resolution would go to normal, but the mouse pointer would be frozen. In addition, I would be unable to get to any of the virtual consoles - no matter which one I tried, I would get a blinking cursor, nothing else.

Following a suggestion I stumbled across, I tried removing Xf86-video-intel. That got me a bit further - I could at least get to a virtual console and shutdown cleanly. Still the same mouse cursor freeze.

Running the lts kernal or downgrading to 5.3.14 clears the problem, but any of the 5.10.x kernels I tried have problems. Searching has got me nothing so far...

Any suggestions as to how I can diagnose this (and, even better, how I can fix it)?

Last edited by toothandnail (2021-01-06 15:05:19)

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#2 2021-01-08 08:32:21

vsilv
Member
Registered: 2013-11-13
Posts: 13

Re: mouse pointer freeze Thinkpad T450 with Linux 5.10.4

I am running into the same problems and I would like to see a solution as well.

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#3 2021-01-08 23:24:56

toothandnail
Member
From: Oxfordshire, UK
Registered: 2012-05-05
Posts: 81

Re: mouse pointer freeze Thinkpad T450 with Linux 5.10.4

vsilv wrote:

I am running into the same problems and I would like to see a solution as well.

I thought things were getting better. Upgraded to the 5.10.5 kernel late yesterday and found I could boot the laptop normally and everything was working. Only temporary though. When I booted 5.10.5 today, I was back to both the thinkfinger and the touchpad not working, mouse cursor stuck in whatever position it was in when lighdm started.

I tired a USB mouse, which worked, but that is no more than a temporary fix. I use the laptop in all sorts of situations, and often won't have anywhere to put a mouse. Not to mention that I've been using laptops with thinkfinger controls for a long time, would love to have the same on a desktop keyboard as well.

Still no other suggestions as to what might be needed, but droping back to 5.9.14 works without problems, so it seems to be something very much kernel related.

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