[DragonFlyBSD - Bug #3198] OpenGL app crash with Radeon driver

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #3198 has been updated by ftigeot.


Among the three choices, I'd say get the R7 240.
- R5 230: are rebadged models and variants of your existing chips. they will most likely exhibit the same issue.
- RX550: it's a new generation and equires the amdgpu driver.
  A port of the driver is almost working but I can't say when the last issues will finally be ironed out.

- R7 240 => that one is known to work fine and is a different radeon generation than the R5.
  Get a variant with a 128bit memory bus if speed is important four you.

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Bug #3198: OpenGL app crash with Radeon driver
http://bugs.dragonflybsd.org/issues/3198#change-13791

* Author: yellowrabbit2010
* Status: Resolved
* Priority: High
* Assignee: 
* Category: Driver
* Target version: 
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The programs I work with, namely, FreeCAD, Kicad, MPV, Chromium crash with ``vm_fault: pager read error'' at different times, sometimes immediately after starting, sometimes after some manipulations.
I managed to repeat the situation on the configuration with minimal changes:
- I downloaded DragonFly-X86_64-LATEST.img.bz2 2019-07-16 03:56 285M
- installed it on 8G usb flash drive
- modify rc.conf and wpa_supplicant.conf in order to connect to WiFi
- pkg install Xorg mesa-demos
- added user rabbit
- startx 
- glxgears

Glxgears crushed immediately after start. Unfortunately, the test installation does not contain packages with debug information, so its core file is not very informative. But since the situation is always repeated, I built packages with debug information and made a screenshot of the gdb file with the downloaded core on the working machine (KERNCONF=X86_64_GENERIC).
I have to note that I use the core of the March version and it has no problems with graphics at all: there have been no failures for a long time with all the programs listed above. That is, it is unlikely that this is a video memory or swap file problem and so on.
= 5.5-DEVELOPMENT DragonFly v5.5.0.325.gf6792-DEVELOPMENT #25: Sun Mar 24 09:54:07 VLAT 2019 =

I made an image of the flash drive immediately after the failure, you can download it from here https://yellowrabbit.gitlab.io/pub/bugs/dfly-glxgears.img.xz . There are no passwords neither for the rabbit user nor for root.








---Files--------------------------------
IMG_20190718_080950_HDR-min.jpg (1.83 MB)
Xorg.0.log (27.6 KB)
gdb-0.txt (558 Bytes)
messages (34.9 KB)
gdb-1.txt (2.72 KB)
gdb-1.png (394 KB)
glxgears.core.xz (298 KB)
IMG_20190724_210557_HDR-min.jpg (2.57 MB)
vga.txz (312 KB)
IMG_20190727_194932_HDR.jpg (4.11 MB)
core.txt.0 (1.12 MB)
messages (35.1 KB)
core.txt.2 (1.47 MB)
core.txt.3 (1.73 MB)


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