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suspend to ram regression in current GIT, bisected

DISCUSSION Dieter Ries 2 participants 5 messages Jul 31, 2008

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#0 lore raw

Hi,

starting from 2.6.27-rc1, my Laptop (Thinkpad T60) did not return from suspend to ram anymore.

When it should resume, the sleep LED went off, power went on, HD LED flashed once, but the display stayed black.

It worked perfectly in 2.6.26, so I bisected it:

ce6fce4295ba727b36fdc73040e444bd1aae64cd is first bad commit commit ce6fce4295ba727b36fdc73040e444bd1aae64cd

Author: Matthew Wilcox <[email protected]>
Date:   Fri Jul 25 15:42:58 2008 -0600

PCI MSI: Don't disable MSIs if the mask bit isn't supported

David Vrabel has a device which generates an interrupt storm on the INTx pin if we disable MSI interrupts altogether. Masking interrupts is only a performance optimisation, so we can ignore the request to mask the interrupt.

:040000 040000 391a397ab982b7b80c0cb369d8a4999d8f7319fb 9a318bf27bf9c1bdd371e25754746397426a79ba M drivers

Reverting it was not a problem and fixed the issue.

As the screen stays black, I have no idea how to get further details on that problem. Which additional information should I provide? Netconsole didn't show anything.

cu
Dieter

Signature · 3 lines
3rd Law of Computing:
        Anything that can go wr
fortune: Segmentation violation -- Core dumped
#1 lore raw
Quoted 7 lines · Dieter Ries

Hi,

starting from 2.6.27-rc1, my Laptop (Thinkpad T60) did not return from suspend to ram anymore.

When it should resume, the sleep LED went off, power went on, HD LED flashed once, but the display stayed black.

Can you test the fix in http://bugzilla.kernel.org/show_bug.cgi?id=11178?
Hopefully it's a DUP.

Thanks,
Jesse

#4 lore raw
Quoted 10 lines · Jesse Barnes
Quoted 7 lines · Dieter Ries

Hi,

starting from 2.6.27-rc1, my Laptop (Thinkpad T60) did not return from suspend to ram anymore.

When it should resume, the sleep LED went off, power went on, HD LED flashed once, but the display stayed black.

Can you test the fix in http://bugzilla.kernel.org/show_bug.cgi?id=11178? Hopefully it's a DUP.

Yes the patch fixed it here. It also fixes IO garbage while shutting down here. Thanks!

Quoted 4 lines

Thanks,
Jesse

cu
Dieter

Signature · 3 lines
3rd Law of Computing:
        Anything that can go wr
fortune: Segmentation violation -- Core dumped