Re: [Bugme-new] [Bug 10971] New: radeonfb : radeon X800 family support (atombios)

[Andrew Morton <akpm@linux-foundation.org>]

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Mon, 23 Jun 2008 14:35:21 -0700 (PDT)
bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=10971
> 
>            Summary: radeonfb : radeon X800 family support (atombios)
>            Product: Drivers
>            Version: 2.5
>      KernelVersion: stable branch 2.6.26-rc6
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: enhancement
>           Priority: P1
>          Component: Console/Framebuffers
>         AssignedTo: jsimmons@infradead.org
>         ReportedBy: Jimmy.Jazz@gmx.net
> 
> 
> Latest working kernel version:2.6.26
> Earliest failing kernel version:
> Distribution:
> Hardware Environment: Radeon X800 family PCIe videocard
> Software Environment:
> Problem Description:
> 
> Using the actual radeonfb kernel driver with a X800 videocard gives me a black
> screen of the death and will crash xorg. Worth, with the vesafb driver the card
> is not even working well.
> 
> Also, i gathered some patches that were published on the fbdev forum, and
> changed few easy things to make the driver understand the monid ddc type of the
> videocard and print better kernel messages. I tested the vga ddc and the monid
> ddc and both are working well.
> 
> The only difficulties are, first i need to deactivate some options in xorg.conf
> to be able to switch back and forth to the virtual ttys.
> 
> [code]
>         Option      "IgnoreEDID" "off" 
>         Option      "ReverseDDC" "off"
>         Option      "VGAAccess" "off"
> [/code]
> 
> Second, the driver needs to share the same resolution and color depth as xorg.
> 
> The following options are working with the radeonfb framebuffer. I have only
> tested them when the radeonfb driver was compiled like an optional module.
> 
> options radeonfb mode_option=1680x1050MR-32@60
> options radeonfb ignore_edid=0
> options radeonfb ignore_devlist=1 force_measure_pll=0 nomodeset=0 noaccel=0
> 
> I hope these patches will help radeon X800 owners to have a nice splash screen
> on their flat wide screen... but without guaranty. My knowledge in videocard
> logic is quite thin :)  
> 
> Steps to reproduce:
> 

A post-2.6.26 regression..

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