Re: Radeon 9600 graphics on an eMac (powermac6,4)

[Maite Gamper <victor@wenzeslaus.de>]

Sorry, I switched up some terminals and accidentially sent the
xorg resolution file from my other computer, the actual file would
be:

# cat /etc/X11/xorg.conf.d/10-monitor.conf
Section "Monitor"
        Identifier "VGA-0"
        Modeline "1280x960" 122.24 1280 1328 1424 1696 960 961 964 1002 
+hsync +vsync
        Modeline "1152x864" 112.44 1152 1216 1344 1560 864 865 868 906 
+hsync +vsync
        Modeline "1024x768" 99.19 1024 1072 1168 1376 768 769 772 810 
+hsync +vsync
        Modeline "800x600" 77.84 800 816 896 1080 600 601 604 642 
+hsync +vsync
        Modeline "640x480" 62.27 640 656 720 864 480 481 484 522 +hsync 
+vsync
EndSection

Sorry for mixing that up, and sorry for the previous message being
HTML-formatted, I forgot to check text only

regards,
Maite

On 12.06.23 21:30, Maite Gamper wrote:
> Hello again,
>
> I both tried setting the display resolution via Modelines and EDID,
> like described in the thread [1].
>
> Using the config file
>
> $ cat /etc/X11/xorg.conf.d/resolutions.conf
> Section "Monitor"
>     Identifier "Monitor0"
> #    VendorName "Dell"
>     Modeline "1600x1200_120.00i"  167.25  1600 1712 1880 2160 1200 
> 1203 1207 1246  Interlace  -HSync +Vsync
>     Modeline "1600x1200_170.00i"  248.00  1600 1728 1896 2192 1200 
> 1203 1207 1266  Interlace  -HSync +Vsync
>
>     # 1920x1440 @ 100.00 Hz Interlaced (CVT)
>     #   field rate 99.79 Hz; hsync: 76.49 kHz; pclk: 198.25 MHz
>     Modeline "1920x1440_100.00i"  198.25  1920 2056 2256 2592 1440 
> 1443 1447 1486  Interlace  -HSync +Vsync
> EndSection
>
> Section "Screen"
>     Identifier "Screen0"
>     Monitor "Monitor0"
>     SubSection "Display"
>         Modes "1600x1200_120.00i"
>     EndSubSection
> EndSection
>
> Xorg starts up without a problem and seems to work quite well.
> However when I tried using an EDID file (I tried using edid-generator 
> [2]),
> the screen remained blank despite the EDID file being generated from the
> Modelines and loaded at startup, as shown in the dmesg log:
>
> [   44.001642] [drm] Got external EDID base block and 0 extensions 
> from "edid/powermac6.4-1152x864.bin" for connector "VGA-1"
> [   44.025758] platform VGA-1: firmware: direct-loading firmware 
> edid/powermac6.4-1152x864.bin
>
> Though I'm kind of confused as to why it is loaded for VGA-1,
> because the eMac only has a VGA-0, DVI-0 and S-video connector
> (according to xrandr). The internal monitor is at VGA-0
> I added the kernel parameter like so in grub.cfg:
>
> GRUB_CMDLINE_LINUX_DEFAULT="splash 
> drm.edid_firmware=edid/powermac6.4-1152x864.bin"
>
> I'll have a look at the loading of the edid file in the next few days 
> again.
>
> regards,
> Maite
>
> [1] https://lists.debian.org/debian-powerpc/2020/04/msg00011.html
> [2] https://github.com/akatrevorjay/edid-generator
>
> On 11.06.23 23:50, John Paul Adrian Glaubitz wrote:
> > Hi Maite!
> >
> > > On Jun 11, 2023, at 9:57 PM, Maite Gamper <victor@wenzeslaus.de> wrote:
> > >
> > > Hello,
> > > I've just installed the debian 12 port on my eMac.
> > > After the radeon_drm driver does the modesetting, the screen turns
> > > black with the drm showing some errors (I ran dmesg over ssh)
> >
> > The eMac is special when ir comes to video modes as it requires a 
> > special EDID binary.
> >
> > See this thread from 2020:
> >
> > > https://lists.debian.org/debian-powerpc/2020/04/msg00001.html
> >
> > Adrian