[00:01] <tomreyn> yes, i also noticed lspci doesn't need it just now. it's just that the module documentation lists two 'x', not just one, and i don't know how it would treat it. so worth a try.
[00:01] <misternumberone> the goal with the vritual screen is to use it to try the solution to my problem discussed in this https://bbs.archlinux.org/viewtopic.php?id=214841
[00:02] <tomreyn> run update-pciids to maybe have lspci output something better than "[AMD/ATI] Device 1478 (rev c1)"
[00:03] <tomreyn> that's a clever approach with this arch forum post :)
[00:05] <misternumberone> tomreyn:  that command without root prints a read-only message, with permissions yields "Downloaded daily snapshot dated 2019-09-18 03:15:02". using the same lspci command again gives the same output no change. my graphics card is AMD Radeon RX 5700 XT
[00:07] <misternumberone> tomreyn:  unfortunately my computer does not have a USB-C port which seems to be required for that product
[00:07] <tomreyn> i guess you need to register to https://pci-ids.ucw.cz/read/PC/1002/ and submit it then ;)
[00:09] <tomreyn> about the displaylink adapters, they do not actually support linux on those two (yet?), sorry.
[00:10] <Bashing-om> misternumberone: Have not followed this conversation - user here: https://ubuntuforums.org/showthread.php?t=2425799 details a how to that works for his AMD RX 5700.
[00:11] <tomreyn> Bashing-om: it's running, the goal is to join two monitors and present them to applications as one.
[00:12] <OerHeks> how about the wayland session ?
[00:12] <Bashing-om> tomreyn: Ouch .. thanks, However now "I know nothing" .
[00:14] <misternumberone> Bashing-om:  I have full accelerated 3d opengl performance comparable to other operating systems using the mesa/amdgpu/RadeonSI open source driver - for windowed applications. fullscreen applications are glitching out in a way they didn't on the same display setup when i was using NVIDIA GPU because the X server is exposing the physical monitors' resolution to them, when I need the entire screen to be extended across all dis
[00:14] <misternumberone> plays
[00:15] <misternumberone> it's three identical-model 1920x1080 panels rotated left and used adjacent
[00:17] <misternumberone> i need to use fullscreen across the full 3240x1920 space, which I achieved on nvidia by creating a single X screen, but I have as yet not found a way to achieve the same functionality on AMD
[00:18] <misternumberone> i am going to update grub and reboot to see if adding that 0 helped activate a virtual display at all
[00:23] <misternumberone> xrandr --properties still only lists 4 outputs corresponding to the physical outputs of my card (3 displayport 1 hdmi)
[00:23] <tomreyn> and --listproviders is the same, too, i assume?
[00:25] <misternumberone> hmm I noticed something wrong, i'll adjust it and see if there's a change
[00:25] <misternumberone> and yeah xrandr --listproviders shows only the GPU itself
[00:25] <misternumberone> with "outputs: 4"
[00:43] <tomreyn> i'm out of ideas, suggest you ask in #amdgpu and / or the relevant AMD support forum.
[00:44] <misternumberone> well i noticed that lspci | grep VGA reports that the pci address of my graphics card is actually 0000:03:00.0
[00:44] <tomreyn> whoops
[00:45] <tomreyn> i guess this explains why i had no hits when searching for "[AMD/ATI] Device 1478"
[00:48] <misternumberone> so I used that in the kernel parameter. when I boot ubuntu normally, there is a moment where the screen is all gray, after POST but before the ubuntu logo. this may be GRUB2 because my boot menu is currently disabled, I can check this. however when I booted with the new parameters my screen turned gray and stayed that way. CPU was still active though. so i had to chroot and revert the parameter to come back
[00:49] <tomreyn> it may be easier to edit those parameters from the grub menu then instead of making them permanent right away
[00:52] <misternumberone> ok