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ValveSoftware / SteamVR-for-Linux

Issue tracker for the Linux port of SteamVR
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Direct mode failure; compositor window may appear on the desktop #276

Open dsalt opened 4 years ago

dsalt commented 4 years ago

This tends to occur on the second and subsequent runs of SteamVR in any given X session. I have never observed it on first run (though it's technically possible, it requires something else to have made use of the HMD).

The bug is, so far as I can tell, actually an X bug,: it looks like a race between lease termination and cleanup due to X client termination. (Bug report is here.) From reading xserver source, it seems to me that a workaround is possible by having vrcompositor wait for a short time for an RRLeaseNotifyEvent message from the X server before exiting.

dsalt commented 4 years ago

With my testing patch in place (see the X bug report, linked above), shutting SteamVR down normally works fine; but sending SIGHUP will cause it to terminate quickly, which is likely to cause X not to complete the lease clean-up, such that the lease is still active but not assigned to any running client..

melvyn2 commented 2 years ago

I can confirm that I have the same symptoms on Xwayland as that bug report, where unplugging it is required between every launch.

TotallyFred commented 1 year ago

It happens randomly for me. Sometimes on first launch, sometimes on subsequent launches.

Ubuntu 22.10 KDE desktop and session manager (vanilla) SteamVR beta (as of Jan 04 2022)