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FS#55706 - [mesa] Updating to 17.2-x causes major desktop drawing issues

Attached to Project: Arch Linux
Opened by Luke Dupin (orbital_sfear) - Friday, 22 September 2017, 17:27 GMT
Last edited by Doug Newgard (Scimmia) - Saturday, 23 September 2017, 14:31 GMT
Task Type Bug Report
Category Packages: Extra
Status Assigned
Assigned To Jan de Groot (JGC)
Andreas Radke (AndyRTR)
Laurent Carlier (lordheavy)
Architecture x86_64
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 0%
Votes 0
Private No


Description: After updating mesa past version 17.1.8 I encountered drawing issues.

Additional info:
* mesa-17.2-x
* GDM and Gnome 3 running X
* Dell XPS 15 9650 (Early 2017)
* Desktop is responsive, but drawing is incorrect.

Steps to reproduce:
Install mesa-17.1.8xxx everything works fine
Install mesa-18.2

Here is a journalctl from a good boot with Mesa-17.1.8

Here is a bad boot with Mesa 17.2

This task depends upon

Comment by none (xxterry1xx) - Saturday, 23 September 2017, 11:59 GMT
Same thing happens here, some of the letters are faded or close together, looking garbled, there is nothing in my journalctl or xorg logs though.
Comment by Luke Dupin (orbital_sfear) - Sunday, 24 September 2017, 00:09 GMT
Also wanted to point out. I'm using the intel driver, no nvidia driver and nouveau is black listed.
Comment by Luke Dupin (orbital_sfear) - Tuesday, 03 October 2017, 15:58 GMT
I figured out how to reproduce this bug on my laptop. I've got a TB16 connected to my XPS. I run two external 4k monitors. Running on Mesa-17.2x with just the laptop display, or only one external 4k monitor works great. Immediately after connecting the 3rd 4k monitor, the drawing issues start. From the look of it, I'd say there's a memory buffer which is overflowing with > 2 4k displays.
Comment by Emil (xexaxo) - Friday, 22 December 2017, 14:32 GMT
Few things to try:
1) is Mesa 17.3.x in the same state?
2) use the modesetting (instead of intel) driver - see
3) establish a [as trivial as possible] way to reproduce and open an upstream report - see