Steam client version (build number or date): Dec 20 2017
Distribution (e.g. Ubuntu): Gentoo Linux
Opted into Steam client beta?: Yes
Have you checked for system updates?: Yes
I have an nvidia card that supports > 24 bpp, and a monitor which supports it as well. Starting X11 with 30 bit depths enabled causes many GL and non-GL applications to segfault, including the steam client.
Steps for reproducing this issue:
Start X with option "Depth 30"
Launch steam
I imagine there are many other implications for what this might do to many games expecting 24bpp formats (though, I have managed to launch some games in this mode successfully). Nvidia is pushing for things like HDR with monitors into the X11 spec, so I imagine getting this working correctly isn't entirely outside of Valve's radar. GTK apps also render poorly now with 30bpp (though I do remember a time when they didn't).
Let me know if a core dump is required - however it's pretty easy to reproduce assuming you have a display that supports this.
Your system information
I have an nvidia card that supports > 24 bpp, and a monitor which supports it as well. Starting X11 with 30 bit depths enabled causes many GL and non-GL applications to segfault, including the steam client.
Steps for reproducing this issue:
I imagine there are many other implications for what this might do to many games expecting 24bpp formats (though, I have managed to launch some games in this mode successfully). Nvidia is pushing for things like HDR with monitors into the X11 spec, so I imagine getting this working correctly isn't entirely outside of Valve's radar. GTK apps also render poorly now with 30bpp (though I do remember a time when they didn't).
Let me know if a core dump is required - however it's pretty easy to reproduce assuming you have a display that supports this.