Re: [gentoo-user] DRM Problem : Radeon HD 7670M

[Mick]

On Sunday 27 Mar 2016 00:23:21 JingYuan Chen wrote:
> Hello,
>
> I had installed Gentoo in my laptop  successfully last weekend. My laptop
> is Toshiba Satellite L840. I found that my VGA card is Radeon HD 7670M
> using "lspci -k" command. Therefore, I refer to Gentoo's Radeon wiki page
> to configure 4.1.15-r1 kernel with TURKS firmware and emerge linux-firmware
> atom.
>
> However, my new kernel can not load TURKS successfully. I notice that there
> is an error message with DRM in dmesg's output. It shows
> [drm:evergreen_init] *ERROR* Failed to load firmware.

So the kernel *wants* to load the Evergreen firmware blobs.


> Why Evergreen ? Is not Northern Islands ? I am sure that the filename I
> gave is TURKS's firmware in menuconfig.

Sure, but the kernel seems to think that the hardware is evergreen for some 
reason.  The Radeon HD 7670M apparently is based on the same chipset as Radeon 
HD 6650M:

http://www.notebookcheck.net/AMD-Radeon-HD-7670M.69483.0.html

so it may be that the foundry it came out of was of an Evergreen batch.


> How could I make the dmesg's error message more verbose to debug ?
>
> Are there some configurations should I check again ?
>
> p.s. I built it in kernel not in modules.
>
> Any advice would be greatly appreciated.
>
> Regards,
> Phil

I would first check that you have in your menuconfig the complete space 
separated Turks stanza:

radeon/BTC_rlc.bin radeon/TURKS_mc.bin radeon/TURKS_me.bin 
radeon/TURKS_pfp.bin radeon/TURKS_smc.bin radeon/SUMO_uvd.bin

and make sure there are no misspellings in there.  If it still complains, then 
replace these with the Evergreen (or whatever dmesg complains about) and try 
booting again.

BTW, have you tried booting different kernels, or LiveISOs to see what they 
detect the hardware as?

-- 
Regards,
Mick