I ran it once again and it froze the whole system, i cant switch any more with ctrl+alt+f2 to a tty and the os seems frozen: [ 124.140697] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 048 [ 124.158336] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 03000248 [ 124.175958] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 04000248 [ 124.193576] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 03000248 [ 124.639257] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 02000248 [ 125.041344] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 02000248 [ 126.686025] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 02000248 [ 128.221828] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 04000248 [ 128.239466] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 03000248 [ 130.374073] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 04000248 [ 130.391717] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 03000248 [ 130.409338] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 04000248 [ 130.426954] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 03000248 [ 130.444573] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 04000248 [ 130.462190] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 03000248 [ 130.979494] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 02000248 [ 131.167606] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000002 [DATA_ERROR] nstatus 02000000 [BAD_ARGUMENT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 0208 data 02000248 [ 131.927840] [TTM] Failed to find memory space for buffer 0xffff9e44dd028c00 eviction [ 131.935609] [TTM] No space for ffff9e44dd028c00 (1366 pages, 5464K, 5M) [ 131.942220] [TTM] placement[0]=0x00070002 (1) [ 131.946742] [TTM] has_type: 1 [ 131.950048] [TTM] use_type: 1 [ 131.953357] [TTM] flags: 0x0000000A [ 131.957185] [TTM] gpu_offset: 0x00000000 [ 131.961442] [TTM] size: 131072 [ 131.964835] [TTM] available_caching: 0x00070000 [ 131.969707] [TTM] default_caching: 0x00010000 [ 131.974404] nouveau 0000:08:00.0: supertuxkart[1075]: fail ttm_validate [ 131.981004] nouveau 0000:08:00.0: supertuxkart[1075]: validating bo list [ 131.987700] nouveau 0000:08:00.0: supertuxkart[1075]: validate: -12 [ 132.049424] nouveau 0000:08:00.0: gr: intr 00100000 [ERROR] nsource 00000010 [LIMIT_COLOR] nstatus 06000000 [BAD_ARGUMENT PROTECTION_FAULT] ch 7 [0018c000 supertuxkart[1075]] subc 7 class 4097 mthd 1d6c data0 [ 162.069689] [TTM] Buffer eviction failed [ 162.074217] nouveau 0000:08:00.0: kwin_x11[864]: fail ttm_validate [ 162.080413] nouveau 0000:08:00.0: kwin_x11[864]: validating bo list [ 162.086680] nouveau 0000:08:00.0: kwin_x11[864]: validate: -12 [ 177.072978] [TTM] Buffer eviction failed [ 177.093326] [TTM] Failed to find memory space for buffer 0xffff9e44c4a51800 eviction [ 177.101060] [TTM] No space for ffff9e44c4a51800 (1366 pages, 5464K, 5M) [ 177.107667] [TTM] placement[0]=0x00070002 (1) [ 177.112185] [TTM] has_type: 1 [ 177.115492] [TTM] use_type: 1 [ 177.118798] [TTM] flags: 0x0000000A [ 177.122623] [TTM] gpu_offset: 0x00000000 [ 177.126884] [TTM] size: 131072 [ 177.130276] [TTM] available_caching: 0x00070000 [ 177.135142] [TTM] default_caching: 0x00010000 [ 177.139836] nouveau 0000:08:00.0: Xorg[710]: fail ttm_validate [ 177.145653] nouveau 0000:08:00.0: Xorg[710]: validating bo list [ 177.151559] nouveau 0000:08:00.0: Xorg[710]: validate: -12 [ 177.221778] [TTM] Failed to find memory space for buffer 0xffff9e44c4a51400 eviction [ 177.229566] [TTM] No space for ffff9e44c4a51400 (1366 pages, 5464K, 5M) [ 177.236171] [TTM] placement[0]=0x00070002 (1) [ 177.240690] [TTM] has_type: 1 [ 177.243997] [TTM] use_type: 1 [ 177.247301] [TTM] flags: 0x0000000A [ 177.251129] [TTM] gpu_offset: 0x00000000 [ 177.255387] [TTM] size: 131072 [ 177.258782] [TTM] available_caching: 0x00070000 [ 177.263647] [TTM] default_caching: 0x00010000 [ 177.268343] nouveau 0000:08:00.0: Xorg[710]: fail ttm_validate [ 177.274164] nouveau 0000:08:00.0: Xorg[710]: validating bo list [ 177.280072] nouveau 0000:08:00.0: Xorg[710]: validate: -12 [ 222.412072] [TTM] Failed to find memory space for buffer 0xffff9e44c237b800 eviction [ 222.419842] [TTM] No space for ffff9e44c237b800 (1366 pages, 5464K, 5M) [ 222.426445] [TTM] placement[0]=0x00070002 (1) [ 222.430964] [TTM] has_type: 1 [ 222.434271] [TTM] use_type: 1 [ 222.437577] [TTM] flags: 0x0000000A [ 222.441402] [TTM] gpu_offset: 0x00000000 [ 222.445660] [TTM] size: 131072 [ 222.449053] [TTM] available_caching: 0x00070000 [ 222.453921] [TTM] default_caching: 0x00010000 [ 222.458616] nouveau 0000:08:00.0: Xorg[710]: fail ttm_validate [ 222.464438] nouveau 0000:08:00.0: Xorg[710]: validating bo list [ 222.470343] nouveau 0000:08:00.0: Xorg[710]: validate: -12 [ 267.535046] [TTM] Buffer eviction failed