https://bugs.freedesktop.org/show_bug.cgi?id=104216 --- Comment #22 from Germano Massullo --- (In reply to Michel Dänzer from comment #21) > (In reply to Germano Massullo from comment #20) > > I experienced the problem with both of them. > > Did you check in Firefox about:support (look for "Driver Version") that it > was actually using your self-built Mesa? > > > BTW, I notice a lot of messages like > > [GFX1-]: ClientLayerManager::BeginTransaction with IPC channel down. GPU > process may have died. > > in the Firefox output you attached. Have you contacted Firefox folks about > whether those are harmless, or how to get more information about them? You are right. There were a ton of such messages, plus other messages concerning load failures of radeonsi, and other libraries. about:support contained so many errors, that I was surprised I even had the opportunity to use Firefox for many days. Since the libraries were available in the LD_LIBRARY_PATH and LIBGL_DRIVERS_PATH, I tried to run $ LD_LIBRARY_PATH='foo/mesa_n_version/usr/lib64/' LIBGL_DRIVERS_PATH='foo/mesa_n_version/usr/lib64/dri' firefox instead of $ LD_LIBRARY_PATH='foo/mesa_n_version/usr/$LIB/' LIBGL_DRIVERS_PATH='foo/mesa_n_version/usr/$LIB/dri' firefox and I got no errors except for those few lines. ============ (/usr/lib64/firefox/firefox:8582): dconf-WARNING **: Unable to open /var/lib/flatpak/exports/share/dconf/profile/user: Permission denied ATTENTION: default value of option force_s3tc_enable overridden by environment. WebGL(0x7f9488ce7800)::ForceLoseContext WebGL(0x7f945e1b8000)::ForceLoseContext [Child 8509, MediaPlayback #5] WARNING: Decoder=7fa5623cf400 state=DECODING_METADATA Decode metadata failed, shutting down decoder: file /builddir/build/BUILD/firefox-58.0.2/dom/media/MediaDecoderStateMachine.cpp, line 372 [Child 8509, MediaPlayback #5] WARNING: Decoder=7fa5623cf400 Decode error: NS_ERROR_DOM_MEDIA_METADATA_ERR (0x806e0006): file /builddir/build/BUILD/firefox-58.0.2/dom/media/MediaDecoderStateMachine.cpp, line 3365 ============ about:support is fine too. I don't know why $LIB caused such problems to Firefox in Fedora 27. I am actually testing again both Mesa 17.0.5 and 18.0.0 -- You are receiving this mail because: You are the assignee for the bug.