FS#64314 - Some applications lagging after update to 1.20.5-4

Attached to Project: Arch Linux
Opened by Marin Pranjic (mpranjic) - Tuesday, 29 October 2019, 19:28 GMT
Last edited by morganamilo (morganamilo) - Friday, 15 November 2019, 16:01 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To No-one
Architecture x86_64
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

After upgrading to xorg-server(-common) to version 1.20.5-4, some applications are lagging.
For example, when scrolling a web page in Firefox, it "freezes" for 1-2 seconds. In Telegram (Messenger), typing a message also lags (the text input doesn't update as I type) for 1-2 seconds.
This goes on and off all the time, it works smoothly for a few seconds, then lags for 1-2s, then works smoothly again for a few seconds.
Some applications don't seem to lag, I tested Google Chrome (yikes), PyCharm, kitty (terminal emulator), to name a few.

I have isolated this issue to the xorg-server package. It is not a lag in applications - I tried to make a screen recording using `simplescreenrecorder` but the lag wasn't seen on the video.
I have isolated this issue to version 1.20.5-4. Previous version (1.20.5-3) works as expected.

I use Archlinux on Dell XPS 9570. I use Intel GPU, Nvidia is switched off using bbswitch package.


Additional info:
* package version(s) = 1.20.5-4
* config and/or log files etc. = nothing custom, please instruct me how to get the logs that might be useful
* link to upstream bug report, if any = not reported upstream
This task depends upon

Closed by  morganamilo (morganamilo)
Friday, 15 November 2019, 16:01 GMT
Reason for closing:  Not a bug
Additional comments about closing:  Problem with the xf86-video-intel driver which isn't recommended, see https://wiki.archlinux.org/index.php/Int el_graphics#Installation
Comment by Marin Pranjic (mpranjic) - Tuesday, 29 October 2019, 19:35 GMT
Sorry, I should have added [xorg-server] in the summary.
Comment by moi (tempomolto) - Tuesday, 05 November 2019, 08:29 GMT
I was experiencing the same symptoms: micro-freezes which rendered my laptop unusable (was driving me crazy).
The culprit was xf86-video-intel. See here:
https://bbs.archlinux.org/viewtopic.php?id=250123
After removing it, it came back to normal.
Comment by Marin Pranjic (mpranjic) - Friday, 15 November 2019, 15:48 GMT
Thank you for your gracious help, kind sir. That solved the issue for me.

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