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Firefox under Linux crashes on some pages including about:support

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I have very strange problems with Firefox. Firefox crashes whenever I open certain pages, including about:support and Mozilla Support asking page! =-) If I run Firefox from ArchLinux console, after crash it writes:

Crash Annotation GraphicsCriticalError: |[0][GFX1-]: GLContext is disabled due to a previous crash.[GFX1-]: GLContext is disabled due to a previous crash. Crash Annotation GraphicsCriticalError: |[0][GFX1-]: GLContext is disabled due to a previous crash.|[1][GFX1-]: GLContext is disabled due to a previous crash.[GFX1-]: GLContext is disabled due to a previous crash. [1046] ###!!! ABORT: X_GLXDestroyPixmap: GLXBadPixmap; 502 requests ago: file /build/firefox/src/firefox-43.0.4/toolkit/xre/nsX11ErrorHandler.cpp, line 157 [1046] ###!!! ABORT: X_GLXDestroyPixmap: GLXBadPixmap; 502 requests ago: file /build/firefox/src/firefox-43.0.4/toolkit/xre/nsX11ErrorHandler.cpp, line 157 [1] 1046 segmentation fault (core dumped) firefox

Safe Mode temportary solves problem, but simple "clean" way - with disabled addons&plugins does not. How can I solve this?

I have very strange problems with Firefox. Firefox crashes whenever I open certain pages, including about:support and Mozilla Support asking page! =-) If I run Firefox from ArchLinux console, after crash it writes: Crash Annotation GraphicsCriticalError: |[0][GFX1-]: GLContext is disabled due to a previous crash.[GFX1-]: GLContext is disabled due to a previous crash. Crash Annotation GraphicsCriticalError: |[0][GFX1-]: GLContext is disabled due to a previous crash.|[1][GFX1-]: GLContext is disabled due to a previous crash.[GFX1-]: GLContext is disabled due to a previous crash. [1046] ###!!! ABORT: X_GLXDestroyPixmap: GLXBadPixmap; 502 requests ago: file /build/firefox/src/firefox-43.0.4/toolkit/xre/nsX11ErrorHandler.cpp, line 157 [1046] ###!!! ABORT: X_GLXDestroyPixmap: GLXBadPixmap; 502 requests ago: file /build/firefox/src/firefox-43.0.4/toolkit/xre/nsX11ErrorHandler.cpp, line 157 [1] 1046 segmentation fault (core dumped) firefox Safe Mode temportary solves problem, but simple "clean" way - with disabled addons&plugins does not. How can I solve this?

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" but simple "clean" way - with disabled addons" what does this mean? Are there any changes in about:config configurations that may be affecting the crashes? I am guessing here that it has to do with hardware acceleration since this is disabled in Safe Mode, but not in the new profile with no add ons you describe above.