[Bug 622238] [NEW] blank screen on resume from suspend

[Daniele Smartango]

Public bug reported:

Sorry, I found how to debug not working suspend or hibernate, but not how to debug not working resume
... maybe there should be an "activate resume debug" procedure.

linux-image-2.6.32-23-generic works
linux-image-2.6.32-24-generic resume then go screen blank and nothing works (neither ctrl-alt-del)
using nouveau on nvidia geforce go 6100
(Version: 2.6.32-24.41)

these are the last line in /var/log/messages (take after cold reset)
Aug 21 18:46:22 daniele-laptop kernel: [28802.574557] CE: hpet increasing min_delta_ns to 22500 nsec
Aug 22 11:02:10 daniele-laptop kernel: [29049.364114] PM: Syncing filesystems ... done.
Aug 22 11:02:10 daniele-laptop kernel: [29049.470760] Freezing user space processes ... (elapsed 0.51 seconds) done.
Aug 22 11:02:10 daniele-laptop kernel: [29049.990275] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
Aug 22 11:02:10 daniele-laptop kernel: [29049.990487] Suspending console(s) (use no_console_suspend to debug)
Aug 22 11:02:10 daniele-laptop kernel: [29050.130078] sd 0:0:0:0: [sda] Synchronizing SCSI cache
Aug 22 11:02:10 daniele-laptop kernel: [29050.130179] sd 0:0:0:0: [sda] Stopping disk
Aug 22 11:02:10 daniele-laptop kernel: [29052.178951] PM: suspend of drv:sd dev:0:0:0:0 complete after 2048.875 msecs
Aug 22 11:02:10 daniele-laptop kernel: [29052.550761] PM: suspend of drv:psmouse dev:serio4 complete after 360.691 msecs
Aug 22 11:02:10 daniele-laptop kernel: [29052.650798] tifm_7xx1 0000:04:06.2: PCI INT A disabled
Aug 22 11:02:10 daniele-laptop kernel: [29052.670083] b43-pci-bridge 0000:04:05.0: PCI INT A disabled
Aug 22 11:02:10 daniele-laptop kernel: [29052.670375] forcedeth 0000:00:14.0: PCI INT A disabled
Aug 22 11:02:10 daniele-laptop kernel: [29052.950067] HDA Intel 0000:00:10.1: PCI INT B disabled
Aug 22 11:02:10 daniele-laptop kernel: [29052.970096] HDA Intel 0000:00:10.1: power state changed by ACPI to D3
Aug 22 11:02:10 daniele-laptop kernel: [29052.970102] PM: suspend of drv:HDA Intel dev:0000:00:10.1 complete after 280.055 msecs
Aug 22 11:02:10 daniele-laptop kernel: [29052.970196] sata_nv 0000:00:0e.0: PCI INT A disabled
Aug 22 11:02:10 daniele-laptop kernel: [29053.010057] ehci_hcd 0000:00:0b.1: PCI INT B disabled
Aug 22 11:02:10 daniele-laptop kernel: [29053.010067] ohci_hcd 0000:00:0b.0: PCI INT A disabled
Aug 22 11:02:10 daniele-laptop kernel: [29053.010086] [drm] nouveau 0000:00:05.0: Evicting buffers...
Aug 22 11:02:10 daniele-laptop kernel: [29053.202846] [drm] nouveau 0000:00:05.0: Idling channels...
Aug 22 11:02:10 daniele-laptop kernel: [29053.202955] [drm] nouveau 0000:00:05.0: Suspending GPU objects...
Aug 22 11:02:10 daniele-laptop kernel: [29053.355421] [drm] nouveau 0000:00:05.0: And we're gone!
Aug 22 11:02Aug 22 11:03:59 daniele-laptop kernel: imklog 4.2.0, log source = /proc/kmsg started.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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blank screen on resume from suspend
https://bugs.launchpad.net/bugs/622238
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