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Désactiver complètement la suspension (au niveau du noyau? - doit être indépendant de l'état utilisé et de l'état de connexion!)

Une fois encore, j'ai besoin d'une solution de contournement pour traiter ma carte graphique de portable presque cassée: elle ne se réveille pas après la suspension!

Le système Ubuntu 14.10 est en train de se réveiller, mais l'affichage reste éteint. Je dois donc appuyer sur le bouton d'alimentation et naviguer aveuglément vers l'option "Arrêter", pour éviter toute mise hors tension brusque.

J'ai déjà désactivé la suspension de tous mes comptes d'utilisateur en suivant cette réponse . Cependant, j'ai maintenant vu trois fois quand il en fait DID faire suspendre!
C'était:

  • une fois après j'ai laissé mon carnet de notes pendant la nuit (je ne me souviens plus du dernier état ...)
  • une fois après avoir fermé le couvercle avant de me connecter à un compte d'utilisateur après le démarrage
  • une fois que l'ordinateur n'était pas utilisé assez longtemps (quelques heures maximum) après l'avoir laissé sur l'écran de verrouillage

Je pense qu’il est toujours permis au système d’utiliser la suspension et qu’aucune règle n’est définie pour l’écran de connexion/verrouillage.
Maintenant, puis-je également désactiver la fonctionnalité de suspension?

Mise à jour:
J'ai récemment installé lubuntu-desktop pour essayer LXDE au lieu de Unity. Maintenant en mode Lubuntu, je ne peux pas désactiver la suspension du tout. La fermeture du couvercle provoque une suspension qui provoque également la mort de l'écran jusqu'à ce que je redémarre.
La solution doit donc être indépendante du DE utilisé!

Modifier:
Informations sur l’ordinateur: lspci -v

00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, fast devsel, latency 0
    Capabilities: <access denied>

00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port (rev 03) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
    Memory behind bridge: dc000000-ddffffff
    Prefetchable memory behind bridge: 00000000c0000000-00000000cfffffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport

00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 02)
    Subsystem: QUANTA Computer Inc Softmodem
    Flags: bus master, fast devsel, latency 0, IRQ 46
    Memory at de300000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel

00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
    I/O behind bridge: 00002000-00002fff
    Memory behind bridge: d8000000-d9ffffff
    Prefetchable memory behind bridge: 00000000d2000000-00000000d3ffffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport

00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 (rev 02) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=08, subordinate=08, sec-latency=0
    I/O behind bridge: 00003000-00003fff
    Memory behind bridge: d6000000-d7ffffff
    Prefetchable memory behind bridge: 00000000d0000000-00000000d1ffffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport

00:1c.2 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 3 (rev 02) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
    I/O behind bridge: 00004000-00004fff
    Memory behind bridge: da000000-dbffffff
    Prefetchable memory behind bridge: 00000000d4000000-00000000d5ffffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport

00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 02) (prog-if 00 [UHCI])
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 0, IRQ 23
    I/O ports at 1800 [size=32]
    Kernel driver in use: uhci_hcd

00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 02) (prog-if 00 [UHCI])
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 0, IRQ 19
    I/O ports at 1820 [size=32]
    Kernel driver in use: uhci_hcd

00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 02) (prog-if 00 [UHCI])
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 0, IRQ 18
    I/O ports at 1840 [size=32]
    Kernel driver in use: uhci_hcd

00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 02) (prog-if 00 [UHCI])
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 0, IRQ 16
    I/O ports at 1860 [size=32]
    Kernel driver in use: uhci_hcd

00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 02) (prog-if 20 [EHCI])
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 0, IRQ 23
    Memory at de304000 (32-bit, non-prefetchable) [size=1K]
    Capabilities: <access denied>
    Kernel driver in use: ehci-pci

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) (prog-if 01 [Subtractive decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=05, subordinate=07, sec-latency=32
    I/O behind bridge: 00005000-00005fff
    Memory behind bridge: de000000-de0fffff
    Capabilities: <access denied>

00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 0
    Capabilities: <access denied>
    Kernel driver in use: lpc_ich

00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [IDE mode] (rev 02) (prog-if 80 [Master])
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19
    I/O ports at 01f0 [size=8]
    I/O ports at 03f4
    I/O ports at 0170 [size=8]
    I/O ports at 0374
    I/O ports at 18b0 [size=16]
    Capabilities: <access denied>
    Kernel driver in use: ata_piix

00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 02)
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: medium devsel, IRQ 10
    I/O ports at 18e0 [size=32]

01:00.0 VGA compatible controller: NVIDIA Corporation G72M [GeForce Go 7400] (rev a1) (prog-if 00 [VGA controller])
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: fast devsel, IRQ 16
    Memory at dd000000 (32-bit, non-prefetchable) [size=16M]
    Memory at c0000000 (64-bit, prefetchable) [size=256M]
    Memory at dc000000 (64-bit, non-prefetchable) [size=16M]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: <access denied>

02:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
    Subsystem: Intel Corporation WM3945ABG MOW2
    Flags: bus master, fast devsel, latency 0, IRQ 45
    Memory at d8000000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: <access denied>
    Kernel driver in use: iwl3945

04:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8055 PCI-E Gigabit Ethernet Controller (rev 10)
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, fast devsel, latency 0, IRQ 44
    Memory at da000000 (64-bit, non-prefetchable) [size=16K]
    I/O ports at 4000 [size=256]
    [virtual] Expansion ROM at da020000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: sky2

05:01.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 168, IRQ 18
    Memory at f0000000 (32-bit, non-prefetchable) [size=4K]
    Bus: primary=05, secondary=06, subordinate=07, sec-latency=176
    Memory window 0: f4000000-f7ffffff (prefetchable)
    Memory window 1: f8000000-fbffffff
    I/O window 0: 00005000-000050ff
    I/O window 1: 00005400-000054ff
    16-bit legacy interface ports at 0001
    Capabilities: <access denied>
    Kernel driver in use: yenta_cardbus

05:01.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller (prog-if 10 [OHCI])
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 64, IRQ 19
    Memory at de005000 (32-bit, non-prefetchable) [size=2K]
    Memory at de000000 (32-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: firewire_ohci

05:01.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 64, IRQ 18
    Memory at de004000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: <access denied>
    Kernel driver in use: tifm_7xx1

05:01.3 SD Host controller: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller (prog-if 01)
    Subsystem: QUANTA Computer Inc Device 0753
    Flags: bus master, medium devsel, latency 64, IRQ 18
    Memory at de005800 (32-bit, non-prefetchable) [size=256]
    Capabilities: <access denied>
    Kernel driver in use: sdhci-pci

Informations mémoire: free -m

             total       used       free     shared    buffers     cached
Mem:          2017       1310        707         14         32        507
-/+ buffers/cache:        770       1247
Swap:          892          1        891
suspendpower-managementlogin-screenlock-screen
6
Byte Commander

J'ai trouvé la solution sur Server Fault:

Nous devons créer un script exécutable dans /etc/pm/sleep.d/ qui annulera toute action de mise en veille prolongée ou de suspension.

sudoedit /etc/pm/sleep.d/000cancel-hibernate-suspend

Le contenu de ce fichier devrait être:

#!/bin/sh
# prevents hibernation and suspend
. "$PM_FUNCTIONS"
case "${1}" in
  suspend|hibernate)
    inhibit
    ;;
  resume|thaw)
    exit 0
    ;;
esac

Maintenant, rendez ce fichier exécutable:

chmod 0755 /etc/pm/sleep.d/000cancel-hibernate-suspend
3
terdon