| 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 | 00:01 |
| tomreyn | run update-pciids to maybe have lspci output something better than "[AMD/ATI] Device 1478 (rev c1)" | 00:02 |
| tomreyn | that's a clever approach with this arch forum post :) | 00:03 |
| 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 | 00:05 |
| 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 ;) | 00:07 |
| tomreyn | about the displaylink adapters, they do not actually support linux on those two (yet?), sorry. | 00:09 |
| 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. | 00:10 |
| tomreyn | Bashing-om: it's running, the goal is to join two monitors and present them to applications as one. | 00:11 |
| OerHeks | how about the wayland session ? | 00:12 |
| Bashing-om | tomreyn: Ouch .. thanks, However now "I know nothing" . | 00:12 |
| 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 | 00:14 |
| misternumberone | it's three identical-model 1920x1080 panels rotated left and used adjacent | 00:15 |
| 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 | 00:17 |
| misternumberone | i am going to update grub and reboot to see if adding that 0 helped activate a virtual display at all | 00:18 |
| 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? | 00:23 |
| 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" | 00:25 |
| tomreyn | i'm out of ideas, suggest you ask in #amdgpu and / or the relevant AMD support forum. | 00:43 |
| 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 | 00:44 |
| tomreyn | i guess this explains why i had no hits when searching for "[AMD/ATI] Device 1478" | 00:45 |
| 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 | 00:48 |
| tomreyn | it may be easier to edit those parameters from the grub menu then instead of making them permanent right away | 00:49 |
| misternumberone | ok | 00:52 |
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