Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2

[Mathieu Malaterre <malat@debian.org>]

On Tue, Oct 4, 2016 at 10:24 PM, Lennart Sorensen
<lsorense@csclub.uwaterloo.ca> wrote:
> On Tue, Oct 04, 2016 at 09:22:17PM +0200, Mathieu Malaterre wrote:
>> On Tue, Oct 4, 2016 at 4:44 PM, Lennart Sorensen
>> <lsorense@csclub.uwaterloo.ca> wrote:
>> > On Tue, Oct 04, 2016 at 03:49:12PM +0200, Samuel Thibault wrote:
>> >> € grep bogl_set_palette *
>> >> bogl.c:      bogl_set_palette = bogl_fb_set_palette;
>> >> bogl.c:         bogl_set_palette = bogl_fb_set_palette;
>> >> bogl.c:         bogl_set_palette = bogl_tcfb_set_palette;
>> >> bogl.c:   the palette with bogl_set_palette() for this to take effect. */
>> >> bogl.h:void (*bogl_set_palette) (int c, int nc, const unsigned char palette[][3]);
>> >> bogl-test.c:  bogl_set_palette (0, 16, palette);
>> >> bogl-test.c:      bogl_set_palette (6, 8, pixmap->palette);
>> >> bowl.c:  bogl_set_palette (0, 16, (const unsigned char (*)[3]) palette);
>> >> bterm.c:  bogl_set_palette(0, 16, palette);
>> >> bterm.c:        bogl_set_palette(0, 16, palette);
>> >> ChangeLog:    * bterm.c (main): Call bogl_set_palette after VT switch.
>> >>
>> >> It looks like bterm always set only colors 0-15.
>> >
>> > So it does.  Hmm, I will compare the code some more.
>> >
>> > Has it been confirmed that radeonfb does not have wrong colours while
>> > offb on the same machine does?
>> >
>> > And what video mode does radeonfb run with?  I wish someone had dmesg
>> > dumps of both offb and radeonfb, but I am not having much luck finding
>> > any with google.
>>
>> Attached.
>
> Could you try what offb does if you boot with the kernel option:
> video=1680x1050-32

Does not seems to be read at all. I tried both:

$ cat /etc/yaboot.conf
[...]
        append="video=1680x1050-32"

and

$ cat /etc/yaboot.conf
[...]
        append="video=offb:1680x1050-32"

dmesg & fbset output appears perfectly identical.