[Intel-gfx] sad output names

[Felix Miata]

Rodrigo Vivi composed on 2018-07-25 09:20 (UTC-0700):

> On Wed, Jul 25, 2018 at 03:37:52AM -0400, Felix Miata wrote:

>> Asus B250 LGA 1151 (Kaby Lake) Motherboard (4 total physical video outputs):
>> https://www.asus.com/us/Motherboards/PRIME-B250M-C-CSM/

>> G4600 HD Graphics 630 CPU

>> Server 1.20.0 (openSUSE Tumbleweed)

>> kernel 4.17.4

>> Xorg driver: modesetting

>> Xrandr		Actual Cable
>> Reports		Connectors
>> DP-1		DisplayPort
>> HDMI-1		----
>> HDMI-2		HDMI
>> HDMI-3		DVI
>> DP-2		VGA

> I understand your concern, but  as you can see there are adaptors involved
> here and they are decided by manufactures. From the driver perspective the
> protocol is the most important part, but that gets sometimes really bad for
> the users, I know.

By "adaptors", do you mean logical adapters in motherboard firmware that maybe
an update could improve?

> Honestly I don't know if there's a way to detect the presence of adapters
> like this DP to VGA for instance. I don't think so.

> Afaik on HDMI-DP with LSPCON we do some tweak on the names to avoid
> showing a misleading information, but that's is the further we can go I'm afraid...

Thanks for the reply.

BTW, DP daisy chaining the same motherboard I get the following:

Screen 0: minimum 320 x 200, current 4480 x 1200, maximum 8192 x 8192
DP-1 disconnected primary (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
HDMI-3 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-1-8 connected 2560x1080+0+0 (normal left inverted right x axis y axis) 673mm
x 284mm
   2560x1080     60.00*+
   1920x1080     60.00    60.00    50.00    59.94    24.00    23.98
   1680x1050     59.95
   1280x1024     75.02    60.02
   1280x800      59.81
   1152x864      75.00
   1280x720      60.00    50.00    59.94  ...
DP-1-1 connected 1920x1200+2560+0 (normal left inverted right x axis y axis)
519mm x 324mm
   1920x1200     59.95*+
   1920x1080     60.00    59.94
   1680x1050     59.95
   1400x1050     59.98
   1280x1024     60.02
   1440x900      59.89
   1280x960      60.00
   1280x800      59.81
   1280x720      60.00    59.94  ...

That logic looks backwards to me. DP-1-8 is the screen in the middle of the
cable chain. :-p

>> Is there anything with kernel, xrandr, driver, server (or other?) that might be
>> changed to better associate the connector names to the actual connector types?
>> Is this a motherboard firmware shortcoming?-- 
"Wisdom is supreme; therefore get wisdom. Whatever else you
get, get wisdom." Proverbs 4:7 (New Living Translation)

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Felix Miata  ***  http://fm.no-ip.com/