Editar:

Editar:

Eu tenho um laptop com dois GPUs (Intel HD4600, Nvidia GTX850M) que roda Ubuntu junto com Windows 10 (sem problemas) usando GRUB.

Eu instalei nvidia-355e não instalei bumblebeedevido a experiências ruins (nunca consegui funcionar/ou eu quebrei a instalação).

Problema:

Algo relacionado à exibição/gráficos trava quando tenho carga gráfica pesada e vejo uma parte das mensagens de inicialização piscar brevemente e estou na tela de login novamente.

Saída lscpi listando ambos os gpus

00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 850M] (rev a2)

saída dmesg

[ 3266.232929] NVRM: GPU at PCI:0000:01:00: GPU-d1657723-9e43-04db-5cdc-6df0c522eb41
[ 3266.232946] NVRM: Xid (PCI:0000:01:00): 13, Graphics Exception on GPC 0: 3D-C MEMLAYOUT Violation. Coordinates: (0xe0, 0x0)
[ 3266.232954] NVRM: Xid (PCI:0000:01:00): 13, Graphics Exception: ESR 0x500420=0x80000400 0x500434=0xe0 0x500438=0x3d00 0x50043c=0x310000

Isso é repetido centenas de vezes.

Eu brinquei com o meu xorg.confneste final de semana, antes era assim:

Section "ServerLayout"
    Identifier "layout"
    Screen 0 "nvidia"
    Inactive "intel"
EndSection

Section "Device"
    Identifier "intel"
    Driver "intel"
    BusID "PCI:0@0:2:0"
    Option "AccelMethod" "SNA"
EndSection

Section "Screen"
    Identifier "intel"
    Device "intel"
EndSection

Section "Device"
    Identifier "nvidia"
    Driver "nvidia"
    BusID "PCI:1@0:0:0"
    Option "ConstrainCursor" "off"
EndSection

Section "Screen"
    Identifier "nvidia"
    Device "nvidia"
    Option "AllowEmptyInitialConfiguration" "on"
    Option "IgnoreDisplayDevices" "CRT"
EndSection

Qualquer coisa que tentei alterar foi substituída na próxima inicialização ou login gráfico.
Adicionei nogpumanageràs minhas opções de inicialização e obtive as configurações do servidor Nvidia X para gerar esta configuração para mim:

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 361.18  (buildd@lcy01-23)  Thu Jan 14 12:00:04 UTC 2016

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nouveau"
#edit, i had to change ^ nvidia to nouveau in order for gui to start
    BusID          "PCI:1@0:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    DefaultDepth    24
    Option         "UseDisplayDevice" "none"
    SubSection     "Display"
        Virtual     1920 1080
        Depth       24
    EndSubSection
EndSection

De alguma forma, ele não foi substituído na inicialização.

O que está causando as experiências não tão tranquilas que tenho e como posso resolver isso?

Drivers gráficos, configuração de driver e coisas que podem me impedir de inicializar no GUI não são meus pontos fortes, então estou apenas disposto a tentar coisas das quais posso me recuperar se algo der errado.

O que eu sei:

  • A inicialização sem o nogpumanagersinalizador restaurará meu xorg.conf aos padrões.
  • Usar o driver nvidia em vez do nouveau impedirá a inicialização na GUI.

Editar:

Tentei reproduzir o problema, mas aconteceu outra coisa. Com alguns programas abertos, o gui congelou no alt-tab e ficou escuro como breu. Nenhum som dos programas parou e consegui acessar os TTYs. Eu precisava reiniciar o lightdm para voltar à interface gráfica.

~/.xsession-errors (a saída completa, apenas duas linhas):

openConnection: connect: No such file or directory
cannot connect to brltty at :0

/var/log/Xorg.0.log.old (na tela preta):

A parte de NVIDIA(0): Setting mode "NULL"to reuse xkmfile /var/lib/xkb/server-7A...está lá porque mudei de gui (tty7) para tty2.

[  1485.990] (II) NVIDIA(0): Setting mode "NULL"
[  1485.990] (II) intel(G0): switch to mode [email protected] on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none
[  1486.072] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
[  1486.128] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1486.137] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1486.144] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1486.148] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1486.159] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1486.168] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1486.176] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1486.182] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1523.369] (II) NVIDIA(0): Setting mode "NULL"
[  1523.370] (II) intel(G0): switch to mode [email protected] on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none
[  1523.460] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
[  1523.511] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1523.518] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1523.523] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1523.533] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1523.542] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1523.551] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1523.559] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1523.567] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1533.636] (II) NVIDIA(0): Setting mode "NULL"
[  1533.636] (II) intel(G0): switch to mode [email protected] on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none
[  1533.724] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
[  1533.775] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1533.782] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1533.791] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1533.797] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1533.807] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1533.815] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1533.821] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1533.830] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1592.439] (II) NVIDIA(0): Setting mode "NULL"
[  1592.440] (II) intel(G0): switch to mode [email protected] on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none
[  1592.520] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
[  1592.576] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1592.582] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1592.592] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1592.599] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1592.607] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1592.615] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1592.622] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1592.632] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1614.636] (II) NVIDIA(0): Setting mode "NULL"
[  1614.636] (II) intel(G0): switch to mode [email protected] on eDP1 using pipe 0, position (0, 0), rotation normal, reflection none
[  1614.932] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
[  1615.010] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1615.018] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1615.028] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1615.034] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1615.044] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1615.053] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1615.061] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1615.068] (II) XKB: reuse xkmfile /var/lib/xkb/server-7A62FE502E17CBF754B0622983D8729CAFBF8366.xkm
[  1625.398] (EE) 
[  1625.398] (EE) Backtrace:
[  1625.399] (EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x563c7bd7f5a6]
[  1625.399] (EE) 1: /usr/bin/X (0x563c7bbcc000+0x1b7709) [0x563c7bd83709]
[  1625.399] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7fa6e5f94000+0x352f0) [0x7fa6e5fc92f0]
[  1625.399] (EE) 3: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fa6e1663000+0xb4d6e) [0x7fa6e1717d6e]
[  1625.399] (EE) 4: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fa6e1663000+0x594ad) [0x7fa6e16bc4ad]
[  1625.399] (EE) 5: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fa6e1663000+0x8d8ea) [0x7fa6e16f08ea]
[  1625.399] (EE) 6: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fa6e1663000+0x5c3e16) [0x7fa6e1c26e16]
[  1625.399] (EE) 
[  1625.399] (EE) Segmentation fault at address 0x28
[  1625.399] (EE) 
Fatal server error:
[  1625.399] (EE) Caught signal 11 (Segmentation fault). Server aborting
[  1625.399] (EE) 
[  1625.399] (EE) 
Please consult the The X.Org Foundation support 
     at http://wiki.x.org
 for help. 
[  1625.399] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[  1625.399] (EE) 
[  1625.399] (EE) Server terminated with error (1). Closing log file.

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