Hi,
Because of the naming change, it becomes difficult to create scripts to
pe-configure display priority, resolution, position, and etc.
In my case, I have a device with Intel iGPU AMD dGPU, and I want to
pre-configure display priority when more than one monitor are connected to the
system. In my own environment, I use xorg.conf and udev rules for hotplug
detect, and it works because those names don’t change. However, if I bring the
device to work, configuration needs to be changed again for different monitors.
Further more, except for MST monitors causing name difference, I see different
names when primary GPU is changed from one to another. I don’t know if there
are better solutions for this, to have designated output names for display
interfaces.
Thanks and Regards,
David
> René Rebe 於 2018年4月21日 上午12:09 寫道：
>
> Hi,
>
>> On 19 Apr 2018, at 09:22, David Chen wrote:
>>
>> Hi,
>>
>> I have observed that when connecting display port with MST enabled monitor,
>> display output name in xrandr becomes something like DP-2-8, and there are
>> more output interfaces listed in xrandr. I am wondering how those names are
>> defined.
>
> As far as I have seen this are the logical connection going over the port.
>
> However, I wanted to chime in for two questions I wanted to ask for some time
> already:
>
> 1) i noticed the various open xorg drivers use different naming, could we
> unify this in regards to dashes and counting 0 and 1 based?
> E.g. DP-0 vs DP1 on intel vs. nouveau vs. modesetting vs. amdgpu, etc?
>
> Of course not such a big deal, but it is a bit annoying to hardcode things
> based on machine types and such in my display setup shell script.
>
> 2) I also have such an MST, Dell 4k display for some three years now. IIRC
> only the modesetting driver does setup the two MST halfs correctly, when
> using the -intel driver I have to manually xrandr --output … --left-of the
> two “virtual screens” to get an output that covers the whole display.
> Any thoughts on this? Any plans to generically improve this or in the intel
> driver?
>
> Greetings,
>René
>
> --
> ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin
> http://exactcode.com | http://exactscan.com | http://ocrkit.com |
> http://t2-project.org | http://rene.rebe.de
>
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