Hi, I was having problems with accelerated applications freezing my system using the Debian jessie nouveau driver, now I am using the newer Debian stretch one. Both gave the same error. I was able to get some information via shh: journalctl brought up the following: -------------------------------------------------------------------------------------------------------------------------- gnome-session[4703]: Window manager warning: Window 0x2c00008 () sets an MWM hint indicating it isn't resizable, but sets min size 316 x 265 and max size 2147483647 x 2147483647; this doesn't make much sense. Jul 15 10:41:21 #### kernel: nouveau 0000:01:00.0: fifo: write fault at 00085e4000 engine 00 [GR] client 0f [GPC2/PROP_0] reason 02 [PTE] on channel 2 [007fa1b000 Xorg[3437]] Jul 15 10:41:21 #### kernel: nouveau 0000:01:00.0: fifo: gr engine fault on channel 2, recovering... gdm-Xorg-:0[3437]: (EE) [mi] EQ overflowing. Additional events will be discarded until existing events are processed. Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) Backtrace: Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4e) [0x563e766dcf6e] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 1: /usr/lib/xorg/Xorg (mieqEnqueue+0x253) [0x563e766bea33] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 2: /usr/lib/xorg/Xorg (QueuePointerEvents+0x52) [0x563e76597632] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fabfcb9c000+0x6277) [0x7fabfcba2277] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fabfcb9c000+0x6a8d) [0x7fabfcba2a8d] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 5: /usr/lib/xorg/Xorg (0x563e7652b000+0x940f8) [0x563e765bf0f8] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 6: /usr/lib/xorg/Xorg (0x563e7652b000+0xb9392) [0x563e765e4392] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (0x7fac0529c000+0x350e0) [0x7fac052d10e0] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 8: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x5) [0x7fac0537d415] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 9: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7fac0665a598] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 10: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7fac0665d25b] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 11: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0xbc) [0x7fac013be33c] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 12: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7fac015c3000+0x7f99) [0x7fac015caf99] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 13: /usr/lib/xorg/modules/libexa.so (0x7fac011a3000+0xae33) [0x7fac011ade33] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 14: /usr/lib/xorg/Xorg (0x563e7652b000+0x1a1008) [0x563e766cc008] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 15: /usr/lib/xorg/Xorg (0x563e7652b000+0xe003a) [0x563e7660b03a] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 16: /usr/lib/xorg/Xorg (0x563e7652b000+0x12e4b5) [0x563e766594b5] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 17: /usr/lib/xorg/Xorg (0x563e7652b000+0x53bef) [0x563e7657ebef] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 18: /usr/lib/xorg/Xorg (0x563e7652b000+0x57c03) [0x563e76582c03] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 19: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7fac052bdb45] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) 20: /usr/lib/xorg/Xorg (_start+0x29) [0x563e7656cf99] Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack. Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) [mi] mieq is *NOT* the cause. It is a victim. Jul 15 10:41:21 #### gdm-Xorg-:0[3437]: (EE) [mi] EQ overflow continuing. 100 events have been dropped. -------------------------------------------------------------------------------------------------------------------------------- I hope you can help me now! Cheers