[Bug 108030] Does not work discrete graphics CERAR (6370M)

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=108030

            Bug ID: 108030
           Summary: Does not work discrete graphics CERAR (6370M)
           Product: Mesa
           Version: 18.1
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: ilya@ilya.pp.ua
        QA Contact: dri-devel@lists.freedesktop.org

Only integrated graphics Intel works.
When running graphics applications with DRI_PRIME=1, this application or
segfault or show a black screen (sometimes playing a sound).
Sometimes, with some probability, this leads to crash Xorg.

In the logs there is nothing suspicious or any errors, only segfault.
I attached some logs, if this is not enough, then tell me which file or output
of which command I have to attach.

I want to either with DRI_PRIME=1 worked discrete graphics or worked all the
time only discrete graphics.
Is this possible on the open drivers with the latest software?

Notebook: HP Pavilion dv6 with hybrid graphics (Intel 3000HD/Radeon HD 6370M
CEDAR)
OS: openSUSE Tumbleweed (4.18.8-1-default, LLVM 6.0.1, Mesa 18.1.7)

sudo cat /sys/kernel/debug/vgaswitcheroo/switch
0:DIS: :DynOff:0000:01:00.0
1:IGD:+:Pwr:0000:00:02.0
2:DIS-Audio: :DynOff:0000:01:00.1

glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ironlake Mobile
OpenGL version string: 2.1 Mesa 18.1.7
OpenGL shading language version string: 1.20
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 2.0 Mesa 18.1.7
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 1.0.16
OpenGL ES profile extensions:

DRI_PRIME=1 glxinfo | grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: AMD CEDAR (DRM 2.50.0 / 4.18.8-1-default, LLVM 6.0.1)
OpenGL core profile version string: 3.3 (Core Profile) Mesa 18.1.7
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.1 Mesa 18.1.7
OpenGL shading language version string: 1.40
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 18.1.7
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10
OpenGL ES profile extensions:

dmesg | grep -i radeon
[ 8604.934090] radeon 0000:01:00.0: WB enabled
[ 8604.934094] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr
0x0000000020000c00 and cpu addr 0x00000000615bbe52
[ 8604.934095] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr
0x0000000020000c0c and cpu addr 0x000000001a943f21
[ 8604.934469] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr
0x000000000005c418 and cpu addr 0x000000006515891a

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