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

[JingYuan Chen]

Hello Mick & James,

I found that I made a big mistake after I installed kernel 4.4.6. My laptop
still used kernel 4.1.5 to boot. It come as a surprise to me.

Therefore, I check the configuration of grub2 and fstab. Then I found that
I forgot to modify mount options in fstab.
The option of my boot partition was set as noauto. So that I don't use the
kernel compiled by myself at all.

After correcting these errors, I can use Radeon driver to execute X window
now. Althought wasting more time to find out the answer, I think that I
learn more with gentoo.

Thank you for your help !

Regards,
Phil
On Mar 29, 2016 9:32 AM, "JingYuan Chen" <phil.cyc@×××××.com> wrote:

> James,
>
> Thanks for your response and suggestion !
>
> Rich0's kernel crash dump page is interesting to me. I think that I could
> find some useful information in it. I used Gentoo Live DVD to install
> Gentoo into my laptop. I will use it to check VGA configuration again this
> weekend.
>
>
> Thank you !
>
>
>
> Regards,
> Phil
>
> On Sun, Mar 27, 2016 at 1:06 AM, James <wireless@×××××××××××.com> wrote:
>
>> JingYuan Chen <phil.cyc <at> gmail.com> writes:
>>
>>
>> > 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.
>> > Why Evergreen ? Is not Northern Islands ? I am sure that the filename I
>> gave is TURKS's firmware in menuconfig.
>> > 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.
>>
>>
>> Look directly into /lib/firmware/radeon/ and make sure you do not have
>> a typo somewhere.
>>
>> Building directly into the kernel is a really good idea for video drivers.
>>
>> Another tool you may want to check out, is Rich0's kernel crash dump
>> page::
>>
>> https://wiki.gentoo.org/wiki/Kernel_Crash_Dumps
>>
>>
>> Last, when all else fails and is actually quite easy is to find a
>> liveCD/DVD, from any distro that boots your lappy with the radeon driver
>> that works. Then you parse about to find the one it uses. Some of these
>> drivers are very close in the components and vendor card vendors have
>> a 'malaise' of dis information surrounding the exact specs of the video
>> components in there hardware, particularly laptop and tablet vendors.
>>
>>
>> Just keep looking around, trying different ones out and something will
>> work, eventually.
>>
>> 'lspci -k' show video driver details use on a generic livedvd booted
>> system.
>>
>> A livedvd was created to give away at a recent california conference but I
>> did not see it posted anywhere on the Release Engineering project pages.
>> There are other gentoo derivative distros with livedvd you can bootup
>> to help find the correct driver.
>>
>>
>>
>> good hunting,
>> James
>>
>>
>>
>