Framebuffer on boot constantly restarts with amdgpu/tonga_mc.bin using R9 380 GPU

kc3 · 03-04-2016, 12:15 AM

When I don't include the amdgpu/tonga driver when I compile my kernel my computer boots fine but of course X won't start, if I do include it via CONFIG_EXTRA_FIRMWARE and CONFIG_EXTRA_FIRMWARE_DIR or if I set CONFIG_DRM_AMDGPU=y it seems to find the driver fine however when booting up my framebuffer will continuously restart itself and the computer is unusable, any ideas what would cause this?

I'm using the development blfs 7.8 systemd edition as I used the LFS 7.8 systemd edition. I do apologize in advance about the lack of posting any configuration or log files as I'm not sure what to include (as the computer doesn't boot)

Krejzi · 03-04-2016, 06:37 AM

Quote:

Originally Posted by kc3

When I don't include the amdgpu/tonga driver when I compile my kernel my computer boots fine but of course X won't start, if I do include it via CONFIG_EXTRA_FIRMWARE and CONFIG_EXTRA_FIRMWARE_DIR or if I set CONFIG_DRM_AMDGPU=y it seems to find the driver fine however when booting up my framebuffer will continuously restart itself and the computer is unusable, any ideas what would cause this?

I'm using the development blfs 7.8 systemd edition as I used the LFS 7.8 systemd edition. I do apologize in advance about the lack of posting any configuration or log files as I'm not sure what to include (as the computer doesn't boot)

AMDGPU is quite a new driver. You may want to try more recent kernel (I had to switch to 4.5-rc to get amdgpu driver usable, but even as a laptop discrete gpu it doesn't do a thing).

Also, to avoid building firmware into kernel, just build amdgpu as module and put the firmware in /lib/firmware/amdgpu. AMD GPU's have quite a number of firmware files and building them all into kernel can result in its increased size and possible performance penalty.

kc3 · 03-04-2016, 02:26 PM

Thanks for the response, I did however figure out this particular problem. I had compiled the 4.5 kernel and it still did the same thing. Turns out I needed a different or more drivers, I ended up putting all of these file

Code:

tonga_ce.bin, tonga_me.bin, tonga_mec.bin,
tonga_rlc.bin, tonga_sdma.bin, tonga_uvd.bin,
tonga_mc.bin, tonga_mec2.bin tonga_pfp.bin,
tonga_sdma1.bin, tonga_smc.bin tonga_vce.bin

into the /lib/firmware/amdgpu directory while setting CONFIG_DRM_AMDGPU=m and now it boots and seems to load that fine (I don't know if all of those files are needed or just a particular one but the only one my system had ever warned me about was tonga_mc.bin which I already had) However my X still doesn't work and I was hoping this would fix that :/ however as that's a separate issue I'll post a different thread about that.

I do however think that as long as I do not run into any issues I'll be keeping the 4.5 kernel.

ReaperX7 · 03-30-2016, 10:59 AM

Try the Xorg configure method from the post in this forum:

http://www.linuxquestions.org/questi...rk-4175521499/

The driver section should have "amdgpu" ideally for your card. You should also activate the option for acceleration method "glamor". However, test the setup first with the "modesetting" driver and no other options. If you get the KMS during startup, then it should be working.