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    #1

    [Solved] Resuming from suspend doesn't turn on screen

    I have a Compaq 8510p laptop. When using suspend the screen never comes to life. There is no errors shown in /var/log/messages which would tell what happened. With hibernate it works sometimes, but not everytime.

    Any help to this would be very cool, thanks .

    From '/var/log/messages' when I resume from suspend (with first two lines after powercycling).
    Code:
    Oct 16 23:03:22 hena-laptop kernel: [  0.457088] Coming out of suspend...
Oct 16 23:03:22 hena-laptop kernel: [  0.457218] PCI: Enabling device 0000:10:00.0 (0000 -> 0002)
Oct 16 23:03:22 hena-laptop kernel: [  0.558810] iwl4965: Radio disabled by HW RF Kill switch
Oct 16 23:03:22 hena-laptop kernel: [  0.736762] ata3: SATA link down (SStatus 0 SControl 0)
Oct 16 23:03:22 hena-laptop kernel: [  0.736785] ata2: SATA link down (SStatus 0 SControl 0)
Oct 16 23:03:22 hena-laptop kernel: [  1.180060] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Oct 16 23:03:22 hena-laptop kernel: [  1.181766] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 filtered out
Oct 16 23:03:22 hena-laptop kernel: [  1.181767] ata1.00: ACPI cmd b1/c1:00:00:00:00:a0 filtered out
Oct 16 23:03:22 hena-laptop kernel: [  1.183494] ata1.00: configured for UDMA/100
Oct 16 23:03:22 hena-laptop kernel: [  1.198536] ata1.00: configured for UDMA/100
Oct 16 23:03:22 hena-laptop kernel: [  1.198538] ata1: EH complete
Oct 16 23:03:22 hena-laptop kernel: [  1.198597] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
Oct 16 23:03:22 hena-laptop kernel: [  1.198626] sd 0:0:0:0: [sda] Write Protect is off
Oct 16 23:03:22 hena-laptop kernel: [  1.198679] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Oct 16 23:03:22 hena-laptop kernel: [  1.198740] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
Oct 16 23:03:22 hena-laptop kernel: [  1.198753] sd 0:0:0:0: [sda] Write Protect is off
Oct 16 23:03:22 hena-laptop kernel: [  1.198801] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Oct 16 23:03:22 hena-laptop kernel: [  1.300505] ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[20] MMIO=[e4102000-e41027ff] Max Packet=[2048] IR/IT contexts=[4/4]
Oct 16 23:03:22 hena-laptop kernel: [  1.319887] ACPI: PCI Interrupt 0000:02:06.3[D] -> GSI 19 (level, low) -> IRQ 22
Oct 16 23:03:22 hena-laptop kernel: [  1.322114] parport_pc 00:02: activated
Oct 16 23:03:22 hena-laptop kernel: [  2.657703] sd 0:0:0:0: [sda] Starting disk
Oct 16 23:03:22 hena-laptop kernel: [  7.032590] Restarting tasks ... <6>usb 3-2: USB disconnect, address 4
Oct 16 23:03:22 hena-laptop kernel: [  7.056304] done.
Oct 16 23:03:22 hena-laptop kernel: [  7.270369] usb 3-2: new full speed USB device using uhci_hcd and address 5
Oct 16 23:03:23 hena-laptop kernel: [  7.433684] Intel(R) PRO/1000 Network Driver - version 7.3.20-k2-NAPI
Oct 16 23:03:23 hena-laptop kernel: [  7.433693] Copyright (c) 1999-2006 Intel Corporation.
Oct 16 23:03:23 hena-laptop kernel: [  7.433774] ACPI: PCI Interrupt 0000:00:19.0[A] -> GSI 22 (level, low) -> IRQ 18
Oct 16 23:03:23 hena-laptop kernel: [  7.435046] e1000: 0000:00:19.0: e1000_probe: (PCI Express:2.5Gb/s:Width x1) 00:1a:4b:80:0c:3a
Oct 16 23:03:23 hena-laptop kernel: [  7.452571] usb 3-2: configuration #1 chosen from 1 choice
Oct 16 23:03:23 hena-laptop kernel: [  7.534381] e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
Oct 16 23:03:23 hena-laptop kernel: [  7.561452] ADDRCONF(NETDEV_UP): eth0: link is not ready
Oct 16 23:03:23 hena-laptop kernel: [  7.908697] ADDRCONF(NETDEV_UP): eth0: link is not ready
Oct 16 23:03:24 hena-laptop kernel: [  9.340545] e1000: eth0: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
Oct 16 23:03:24 hena-laptop kernel: [  9.340556] e1000: eth0: e1000_watchdog: 10/100 speed: disabling TSO
Oct 16 23:03:24 hena-laptop kernel: [  9.344462] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Oct 16 23:06:17 hena-laptop syslogd 1.5.0#1ubuntu1: restart.
Oct 16 23:06:17 hena-laptop kernel: Inspecting /boot/System.map-2.6.24-21-generic
    Following is from 'lspci -vvv'
    01:00.0 VGA compatible controller: ATI Technologies Inc M76 [Radeon Mobility HD 2600 Series] (prog-if 00 [VGA controller])
    Subsystem: Hewlett-Packard Company Unknown device 30c5
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 10
    Region 0: Memory at d0000000 (32-bit, prefetchable) [size=256M]
    Region 1: I/O ports at 4000 [size=256]
    Region 2: Memory at e4400000 (32-bit, non-prefetchable) [size=64K]
    [virtual] Expansion ROM at e4420000 [disabled] [size=128K]
    Capabilities: <access denied>
    Tags: None
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    #2
    Re: Resuming from suspend doesn't turn on screen

    How large is your swap space? Although swap is theoretically not "needed" for new Linux installations, you really do need it for hibernate/suspend to RAM. You need the swap space to be slightly larger than your physical memory, to ensure that all of memory plus a bit can go to the swap space when you suspend.

    kinfocenter will show it graphically. Run it from Alt-F2 or the konsole.
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      #3
      Re: Resuming from suspend doesn't turn on screen

      Code:
      $ free
          total    used    free  shared  buffers  cached
Mem:   3107600  866204  2241396      0   18556  388236
-/+ buffers/cache:  459412  2648188
Swap:   4120632       0  4120632
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        #4
        Re: Resuming from suspend doesn't turn on screen

        I used the changes in here
        http://kubuntuforums.net/forums/inde...opic=3086804.0

        And tried the suspend couple of times and it seems to be working now, yay !
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