[gentoo-user] HD7870 AMD Catalyst no framebuffer console

[gentoo-user] HD7870 AMD Catalyst no framebuffer console

[Amankwah]

Hi all,
    I have a video card HD7870, I tried install the AMD Catalyst driver ~amd64 in portage, it works well under X. But when I press ctrl+alt+F1, the screen is blank??
    Although I googled this problem I add nomodeset and radeon.modeset=0 video=uvesa to the kernel cmdline in /boot/grub/menu.lst, it didn't work at all. What can I do to solve this?

Liu Yang

Re: [gentoo-user] HD7870 AMD Catalyst no framebuffer console

[Wang Xuerui]

2013/4/18 Amankwah <amankwah7@gmail.com>:
> Hi all,
>     I have a video card HD7870, I tried install the AMD Catalyst driver ~amd64 in portage, it works well under X. But when I press ctrl+alt+F1, the screen is blank??
>     Although I googled this problem I add nomodeset and radeon.modeset=0 video=uvesa to the kernel cmdline in /boot/grub/menu.lst, it didn't work at all. What can I do to solve this?

IIRC fglrx does not support KMS, hence no framebuffer.

The radeon parameters are of no use in this case; in order for the
proprietary driver to work properly, the open source module must be
blacklisted. So instructing the radeon module makes little sense.

Please correct me if I got any of these wrong; haven't used the binary
blob for about 2 years myself, the memory is slowly fading.

Re: [gentoo-user] HD7870 AMD Catalyst no framebuffer console

[Michael Hampicke]

Am 18.04.2013 17:37, schrieb Wang Xuerui:
> 2013/4/18 Amankwah <amankwah7@gmail.com>:
>> Hi all,
>>     I have a video card HD7870, I tried install the AMD Catalyst driver ~amd64 in portage, it works well under X. But when I press ctrl+alt+F1, the screen is blank??
>>     Although I googled this problem I add nomodeset and radeon.modeset=0 video=uvesa to the kernel cmdline in /boot/grub/menu.lst, it didn't work at all. What can I do to solve this?
> 
> IIRC fglrx does not support KMS, hence no framebuffer.
> 
correct

> The radeon parameters are of no use in this case; in order for the
> proprietary driver to work properly, the open source module must be
> blacklisted. So instructing the radeon module makes little sense.
> 
correct, don't load the radeon module. You can also disable the Direct
Rendering Manager (CONFIG_DRM).
For framebuffer on my machine I use CONFIG_FB_EFI, but CONFIG_FB_VESA
should work too. I'm not sure about CONFIG_FB_RADEON