Ubuntu 14.10 x64 inicialização muito lenta. Nouveau / nVidia: cano quebrado?

Question

(EDITADO 2x) O Ubuntu 14.10 x64 recentemente instalado leva mais de 4 minutos para inicializar no sistema abaixo. Eu não entendo a saída 'dmesg'; no começo eu pensei que um mouse MS USB era um problema; substituiu isso com um mouse Logitech e ainda 4 + minutos. Então é o atraso aqui do driver Nouveau tentando trabalhar com meu cartão nVidia? De onde vem esse "cano quebrado"? EDIT 2: Eu acho que é esse bug: link

Uma parte da saída do dmesg:

...trimmed...
[   14.948030] nouveau  [  PTHERM][0000:01:00.0] FAN control: none / external
[   14.948041] nouveau  [  PTHERM][0000:01:00.0] fan management: automatic
[   14.948044] nouveau  [  PTHERM][0000:01:00.0] internal sensor: yes
[   14.948057] nouveau  [     CLK][0000:01:00.0] 0f: core 650 MHz shader 1625 MHz memory 400 MHz
[   14.948104] nouveau  [     CLK][0000:01:00.0] --: core 566 MHz shader 1400 MHz memory 499 MHz
[   14.948261] [TTM] Zone  kernel: Available graphics memory: 2023128 kiB
[   14.948263] [TTM] Initializing pool allocator
[   14.948269] [TTM] Initializing DMA pool allocator
[   14.948279] nouveau  [     DRM] VRAM: 512 MiB
[   14.948281] nouveau  [     DRM] GART: 1048576 MiB
[   14.948284] nouveau  [     DRM] TMDS table version 2.0
[   14.948286] nouveau  [     DRM] DCB version 4.0
[   14.948288] nouveau  [     DRM] DCB outp 00: 02000300 00000028
[   14.948290] nouveau  [     DRM] DCB outp 01: 01000302 00020030
[   14.948291] nouveau  [     DRM] DCB outp 02: 04011310 00000028
[   14.948293] nouveau  [     DRM] DCB outp 03: 010223f1 00c0c080
[   14.948295] nouveau  [     DRM] DCB conn 00: 00001030
[   14.948297] nouveau  [     DRM] DCB conn 01: 00000200
[   14.948298] nouveau  [     DRM] DCB conn 02: 00000110
[   14.948299] nouveau  [     DRM] DCB conn 03: 00000111
[   14.948301] nouveau  [     DRM] DCB conn 04: 00000113
[   14.956768] nouveau W[     DRM] failed to create encoder 0/1/0: -19
[   14.956770] nouveau W[     DRM] TV-1 has no encoders, removing
[   14.956834] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[   14.956836] [drm] Driver supports precise vblank timestamp query.
[   14.969193] nouveau  [     DRM] MM: using M2MF for buffer copies
[   15.030623] nouveau  [     DRM] allocated 1280x1024 fb: 0x70000, bo ffff88012915d800
[   15.030731] fbcon: nouveaufb (fb0) is primary device
[   15.092134] EXT4-fs (sdc7): re-mounted. Opts: errors=remount-ro
[   15.097810] Console: switching to colour frame buffer device 160x64
[   15.098667] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device
[   15.098669] nouveau 0000:01:00.0: registered panic notifier
[   15.112037] [drm] Initialized nouveau 1.1.2 20120801 for 0000:01:00.0 on minor 0
[   18.115446] WARNING! power/level is deprecated; use power/control instead
[  167.149871] init: Error while reading from descriptor: Broken pipe
[  167.154588] init: failsafe main process (688) killed by TERM signal
[  167.786696] audit: type=1400 audit(1419194421.420:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=834 comm="apparmor_parser"
[  167.786703] audit: type=1400 audit(1419194421.420:12): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/cupsd" pid=834 comm="apparmor_parser"
[  167.786707] audit: type=1400 audit(1419194421.420:13): apparmor="STATUS" operation="profile_load" profile="unconfined" name="third_party" pid=834 comm="apparmor_parser"
[  167.843884] audit: type=1400 audit(1419194421.476:14): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/lightdm/lightdm-guest-session" pid=836 comm="apparmor_parser"
[  167.843891] audit: type=1400 audit(1419194421.476:15): apparmor="STATUS" operation="profile_load" profile="unconfined" name="chromium" pid=836 comm="apparmor_parser"
[  167.845445] audit: type=1400 audit(1419194421.480:16): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/sbin/dhclient" pid=836 comm="apparmor_parser"
[  167.845451] audit: type=1400 audit(1419194421.480:17): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=836 comm="apparmor_parser"
[  167.845456] audit: type=1400 audit(1419194421.480:18): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=836 comm="apparmor_parser"
[  167.854293] audit: type=1400 audit(1419194421.488:19): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/bin/evince" pid=836 comm="apparmor_parser"
[  167.854300] audit: type=1400 audit(1419194421.488:20): apparmor="STATUS" operation="profile_load" profile="unconfined" name="sanitized_helper" pid=836 comm="apparmor_parser"
[  168.015337] Bluetooth: Core ver 2.19
[  168.015350] NET: Registered protocol family 31
[  168.015351] Bluetooth: HCI device and connection manager initialized
[  168.015357] Bluetooth: HCI socket layer initialized
[  168.015359] Bluetooth: L2CAP socket layer initialized
[  168.015367] Bluetooth: SCO socket layer initialized
[  168.062156] Bluetooth: RFCOMM TTY layer initialized
[  168.062166] Bluetooth: RFCOMM socket layer initialized
[  168.062175] Bluetooth: RFCOMM ver 1.11
[  168.076354] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[  168.076357] Bluetooth: BNEP filters: protocol multicast
[  168.076365] Bluetooth: BNEP socket layer initialized
[  168.133543] init: cups main process (835) killed by HUP signal
[  168.133553] init: cups main process ended, respawning
[  169.256440] systemd-logind[1022]: New seat seat0.
[  169.269854] systemd-logind[1022]: Watching system buttons on /dev/input/event1 (Power Button)
[  169.269914] systemd-logind[1022]: Watching system buttons on /dev/input/event0 (Power Button)
[  169.409480] r8169 0000:04:00.0 eth0: link down
[  169.409704] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[  169.425476] r8169 0000:05:00.0 eth1: link down
[  169.425489] r8169 0000:05:00.0 eth1: link down
[  169.425615] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[  169.528376] init: nvidia-prime main process (1083) terminated with status 127
[  171.473061] r8169 0000:05:00.0 eth1: link up
[  171.473071] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[  175.175873] init: plymouth-upstart-bridge main process ended, respawning
[  175.187370] init: plymouth-upstart-bridge main process ended, respawning
[  175.230395] systemd-logind[1022]: Failed to start unit [email protected]: Unknown unit: [email protected]
[  175.230400] systemd-logind[1022]: Failed to start user service: Unknown unit: [email protected]
[  175.234194] systemd-logind[1022]: New session c1 of user lightdm.
[  175.234210] systemd-logind[1022]: Linked /tmp/.X11-unix/X0 to /run/user/112/X11-display.
[  198.029026] audit_printk_skb: 45 callbacks suppressed
[  198.029029] audit: type=1400 audit(1419194451.664:36): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=1789 comm="apparmor_parser"
[  198.029036] audit: type=1400 audit(1419194451.664:37): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=1789 comm="apparmor_parser"
[  198.040134] audit: type=1400 audit(1419194451.676:38): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="third_party" pid=1789 comm="apparmor_parser"
[  244.836062] systemd-logind[1022]: Failed to start unit [email protected]: Unknown unit: [email protected]
[  244.836070] systemd-logind[1022]: Failed to start user service: Unknown unit: [email protected]
[  244.845657] systemd-logind[1022]: New session c2 of user john.
[  244.845680] systemd-logind[1022]: Linked /tmp/.X11-unix/X0 to /run/user/1000/X11-display.

Descrição do sistema (quando eu ainda tinha o mouse da MS conectado, mas do mesmo modo):

Processor      : 4x Intel(R) Core(TM)2 Quad CPU    Q9550  @ 2.83GHz
Memory      : 4046MB (1194MB used)
Operating System        : Ubuntu 14.10
Date/Time       : Sun 21 Dec 2014 11:58:51 AM PST
-Display-
Resolution      : 1280x1024 pixels
OpenGL Renderer     : Unknown
X11 Vendor      : The X.Org Foundation
-Multimedia-
Audio Adapter       : HDA-Intel - HDA Intel
-Input Devices-
 Power Button
 Power Button
 Logitech Logitech USB Keyboard
 Logitech Logitech USB Keyboard
 HDA Intel Front Mic
 HDA Intel Rear Mic
 HDA Intel Line
 HDA Intel Line Out Front
 HDA Intel Line Out Surround
 HDA Intel Line Out CLFE
 HDA Intel Line Out Side
 HDA Intel Front Headphone
 Microsoft  Microsoft Basic Optical Mouse v2.0
-SCSI Disks-
SAMSUNG DVDWBD SH-B083L
ATA MAXTOR STM350032
ATA MAXTOR STM350063
PLEXTOR DVDR   PX-712A
ATA Maxtor 6Y120P0
Generic USB SD Reader
Generic USB MS Reader

Operating System
----------------
Kernel      : Linux 3.16.0-28-generic (x86_64)
Compiled        : #38-Ubuntu SMP Fri Dec 12 17:37:40 UTC 2014
C Library       : Unknown
Default C Compiler      : GNU C Compiler version 4.9.1 (Ubuntu 4.9.1-16ubuntu6) 
Distribution        : Ubuntu 14.10

    

Answer 1

Abordagem de solução de problemas

Eu tive um problema semelhante: inicializar em um sistema atualizado para o Ubuntu 14.10 x64 levou mais de 3 minutos, e eu também recebi a mensagem de erro

init: Error while reading from descriptor: Broken pipe

no meu dmesg-output, mas eu não tinha uma placa Nvidia instalada e, portanto, também não usava o driver Nouveau. Do mencionado Bug # 1364630 eu tenho a idéia de que < em> upstart pode ser a fonte real do problema. Para testar essa hipótese, eu substituí upstart temporariamente com systemd (como descrito aqui ). O uso de systemd não alterou a duração do processo de inicialização, mas o upstart foi interrompido por 2-3 minutos antes do erro de canal quebrado ser exibido, systemd pendurado e exibido:

A start job is running for Create Volatile Files and Directories

Pesquisando por essa mensagem me trouxe para o blog O Debian trava durante a inicialização por Mattia Migliorini 'deshack ', onde um problema semelhante é descrito para o Debian. A causa raiz do problema do deshack era um /tmp -directory inchado, que ele simplesmente removia e recriava para resolver o problema. Ao testar sua solução com sucesso, fiquei sabendo que essa também era a causa do meu problema.

Solução (com base na solução do deshack para o Debian)

1. No Grub, pressione e para editar a entrada do Ubuntu. Após a linha linux /boot/vmlinuz... add

   --add rw init=/bin/bash
   

   e pressione Ctrl + X para inicializar. Um shell com permissões de root será carregado.

2. Verifique o /tmp -directory para o inchaço:

   ls -la /tmp
   

   No meu caso, . foi maior que 112 MB; De acordo com o blog de deshack, também pode ser que /tmp contenha milhões de links simbólicos. De qualquer forma, se parecer estranho de alguma forma, vale a pena tentar recriar /tmp do zero (passo 3).

3. Remova e recrie o /tmp -directory:

   rm -rf /tmp
   mkdir /tmp
   chmod 1777 /tmp
   

4. Feche o shell com exit , ignore o pânico do Kernel e reinicie o computador.

Espero que ajude!