Quando tenho mais aplicativos em execução (geralmente IntelliJ IDEA, Firefox, Chrome e NodeJS) e inicio o Blender, às vezes depois de algum tempo (geralmente de 15 a 30 minutos) meus monitores ficam pretos e eu tenho que matar Xorg e às vezes até sddm processos para forçá-lo a recuperar. Infelizmente, isso significa matar todos os aplicativos em execução também.
Eu não tenho certeza do que está causando isso, se é um driver defeituoso (talvez um NVidia proprietário?), ou algum bug no Blender, mas é muito chato.
Registre dmesg :
[ 7680.953114] Corrupted low memory at ffff88000000b000 (b000 phys) = 00043dd3
[ 7680.953117] ------------[ cut here ]------------
[ 7680.953122] WARNING: CPU: 3 PID: 6927 at /build/linux-8wXrCB/linux-4.4.0/arch/x86/kernel/check.c:141 check_for_bios_corruption.part.1+0xaf/0x100()
[ 7680.953122] Memory corruption detected in low memory
[ 7680.953123] Modules linked in: rfcomm twofish_generic twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common xts pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) arc4 md4 nls_utf8 cifs ccm fscache bnep binfmt_misc xpad ff_memless mxm_wmi snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm nvidia_uvm(POE) irqbypass serio_raw snd_usb_audio snd_usbmidi_lib btusb btrtl btbcm btintel bluetooth snd_hda_codec_realtek joydev input_leds snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd mei_me soundcore lpc_ich mei shpchp tpm_infineon 8250_fintek wmi intel_smartconnect mac_hid parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher
[ 7680.953150] af_alg dm_crypt hid_generic uas usb_storage usbhid hid crct10dif_pclmul crc32_pclmul nvidia_drm(POE) nvidia_modeset(POE) ghash_clmulni_intel nvidia(POE) aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd drm_kms_helper syscopyarea sysfillrect psmouse sysimgblt fb_sys_fops ahci drm r8169 libahci mii fjes video
[ 7680.953163] CPU: 3 PID: 6927 Comm: kworker/3:0 Tainted: P OE 4.4.0-109-generic #132-Ubuntu
[ 7680.953163] Hardware name: MSI MS-7850/B85-G41 PC Mate(MS-7850), BIOS V2.9 03/30/2015
[ 7680.953165] Workqueue: events check_corruption
[ 7680.953166] 0000000000000286 cb76deaa0b03857b ffff880271017d20 ffffffff813fbb03
[ 7680.953168] ffff880271017d68 ffffffff81cb20f0 ffff880271017d58 ffffffff81081e52
[ 7680.953169] 0000000000000000 ffff880000010000 ffffffff8210d1f0 0000000000000001
[ 7680.953171] Call Trace:
[ 7680.953174] [<ffffffff813fbb03>] dump_stack+0x63/0x90
[ 7680.953176] [<ffffffff81081e52>] warn_slowpath_common+0x82/0xc0
[ 7680.953178] [<ffffffff81081eec>] warn_slowpath_fmt+0x5c/0x80
[ 7680.953179] [<ffffffff8106555f>] check_for_bios_corruption.part.1+0xaf/0x100
[ 7680.953181] [<ffffffff810655c8>] check_corruption+0x18/0x50
[ 7680.953183] [<ffffffff8109b1a5>] process_one_work+0x165/0x480
[ 7680.953185] [<ffffffff8109b50b>] worker_thread+0x4b/0x4d0
[ 7680.953186] [<ffffffff8109b4c0>] ? process_one_work+0x480/0x480
[ 7680.953187] [<ffffffff810a1845>] kthread+0xe5/0x100
[ 7680.953189] [<ffffffff810a1760>] ? kthread_create_on_node+0x1e0/0x1e0
[ 7680.953192] [<ffffffff81844a0f>] ret_from_fork+0x3f/0x70
[ 7680.953193] [<ffffffff810a1760>] ? kthread_create_on_node+0x1e0/0x1e0
[ 7680.953194] ---[ end trace 020001dd8273dadd ]---
[ 9732.827585] perf interrupt took too long (2579 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[22947.318942] kscreen_backend[2861]: segfault at 10 ip 00007f91684afcd0 sp 00007ffd78011e10 error 4 in KSC_XRandR.so[7f9168499000+1f000]
[22947.329391] kactivitymanage[2772]: segfault at 7ff9d710ccd0 ip 00007ff9aef89261 sp 00007ffdf69a2eb8 error 4 in libQt5Sql.so.5.5.1[7ff9aef75000+3f000]
[22947.348469] Qt bearer threa[3167]: segfault at 0 ip 00007fdde82ad72e sp 00007fddda5255d0 error 4 in libQt5DBus.so.5.7.0[7fdde8252000+7e000]
[22947.557856] traps: chromium-browse[7104] trap int3 ip:55c7bc31884c sp:7ffd3ab394f0 error:0
A mensagem sobre memória corrompida não aparece nos logs, a menos que esteja relacionada a essa falha do Blender, portanto, estou supondo que a memória está bem.
Estou usando o Kubuntu 16.04 LTS. A GPU é a GTX 1070.