protonscr

[BUG] Error 496 Index HMD

steamvropen bug
ValveSoftware/SteamVR-for-Linux#834 · opened 2025-11-16 by ynot01 · updated 2026-02-10 · 7 comments · github
Yynot01 2025-11-16 github

Describe the bug
SteamVR refuses to acknowledge the Index HMD display. Index reports the base stations and itself successfully when starting SteamVR.

Initially, the Index HMD would show up when running cat /sys/class/drm/card1-DP-4/edid | parse-edid

After adding /etc/X11/xorg.conf.d/10-nvidia-hmd.conf, it was treated as a third monitor (I have two monitors, and it started displaying a third screen on the physical Index) and showed up in xrandr as well, but the display was still unrecognized by SteamVR.

After this, running xrandr --output DP-0 --set non-desktop 0 && xrandr --auto and running Direct Mode from SteamVR legacy settings made the display turn off, but did not make SteamVR recognize the display.

Having the DisplayPort unplugged at boot and plugging in before starting Steam did not fix it either.

To Reproduce
Open SteamVR

Expected behavior
SteamVR should recognize the display and start outputting to it

System Information (please complete the following information):
Please use the latest Steam beta client and SteamVR beta for your bug reports!

  • Steam client version (build number or date): 1759461205 Stable SteamClient023
  • SteamVR version: STEAMVR beta 2.14.2 (Non-beta has same issue)
  • Distribution (e.g. Ubuntu): Linux Mint 22.2
  • Steam runtime diagnostics: runtime_diagnostics.txt
  • Steam and SteamVR logs: steam-logs.tar.gz
  • Minidumps: steam-minidumps.tar.gz

Screenshots

Image

Additional context

Running steam_latest.deb, not flatpak

/etc/X11/xorg.conf.d/10-nvidia-hmd.conf

/etc/udev/rules.d/60-steam-vr.rules

upload-system-info

xrandr output

JJohnTator 2025-12-01 github

Same behavior for me with the HTC Vive.
Running NVIDIA GPU on Linux Mint 22, and also tested on Steam Deck with the same results.
Everything works in Previous Branch option (2.12.14)

LluneSnowtail 2025-12-03 github

just recently starting having this issue as well, using fedora 43

SSgtmoustache 2026-01-15 github

I started having the same issue on CachyOS since december. Haven't found a way to fix it yet. It was working well before.

JJohanAR 2026-01-31 github

just recently starting having this issue as well, using fedora 43

I got error 496 on Fedora Kde 42, but it went away when I upgraded to 43. Nvidia 580.119.02 both before and after the upgrade.

Rroryyamm 2026-02-06 · hidden on GitHub github

Getting the same behavior on Devuan Ceres (more or less Debian Sid) with an RX 6650 XT. None of the branches work in my case using Mesa 25.3.3. I am on X11, using WindowMaker, but the WM should not be an issue.

steam-minidumps.tar.gz

steam-logs.tar.gz

rundiags.txt

Interestingly, I can see in the console that there's an issue with the vrcompositor related to a swapchain failure - but it just keeps soldiering on after that. Perhaps this has something to do with the issue in Mesa that's catching #836?

Kkisak-valve maintainer 2026-02-06 github

@roryyamm, since you're using mesa 25.3.x and an X11 based session, you need https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39166.

Rroryyamm 2026-02-10 · hidden on GitHub github

since you're using mesa 25.3.x and an X11 based session, you need https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39166.

While I do not wish the ordeal I went through to apply the patch through a proper package on my worst enemies, it did the trick. Thank you and apologies for going off-topic.

Nothing extracted yet.