I use PureOS on old Lenovo ThinkPad X200 (with LibreBoot).
I use JWM on desktop.
Xorg crashes cca 1 or 2 times per day, I do not know reason.
Here is relevant part of /var/log/Xorg.0.log
(EE) glamor0: GL error: GL_OUT_OF_MEMORY in glTexSubImage (EE) glamor0: GL error: GL_OUT_OF_MEMORY in glTexSubImage (WW) glamor: Failed to allocate 16x16 FBO due to GL_OUT_OF_MEMORY. (WW) glamor: Expect reduced performance. (EE) glamor0: GL error: GL_OUT_OF_MEMORY in glTexSubImage (EE) (EE) Backtrace: (EE) 0: /usr/lib/xorg/Xorg (?+0x0) [0x55e392b6de90] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (?+0x0) [0x7ff69db988df] (EE) 2: /usr/lib/xorg/modules/libglamoregl.so (?+0x0) [0x7ff69c56a400] (EE) 3: /usr/lib/xorg/modules/libglamoregl.so (?+0x0) [0x7ff69c574eb0] (EE) 4: /usr/lib/xorg/modules/libglamoregl.so (?+0x0) [0x7ff69c575220] (EE) 5: /usr/lib/xorg/modules/libglamoregl.so (?+0x0) [0x7ff69c5753b0] (EE) 6: /usr/lib/xorg/modules/libglamoregl.so (?+0x0) [0x7ff69c577010] (EE) 7: /usr/lib/xorg/Xorg (?+0x0) [0x55e392aefd20] (EE) 8: /usr/lib/xorg/Xorg (?+0x0) [0x55e392ae3e10] (EE) 9: /usr/lib/xorg/Xorg (?+0x0) [0x55e392a0f690] (EE) 10: /usr/lib/xorg/Xorg (?+0x0) [0x55e392a135c0] (EE) 11: /lib/x86_64-linux-gnu/libc.so.6 (?+0x0) [0x7ff69d9e9a30] (EE) 12: /usr/lib/xorg/Xorg (?+0x0) [0x55e3929fd660] (EE) (EE) Segmentation fault at address 0x0