cannot resume from suspend: screen garbled [karmic powerpc]

[tournesolo]

When waking up from sleep running Karmic, the screen of this aluminium powerbook is garbled, looking like a night sky with lots of stars superimposed with vertical rows of light rectangles (creating an effect that looks a bit like windows of a skyscraper ;). The system stays in that state, making the laptop unusable and forcing a hard reboot. (This is a regression, it used to work well in earlier versions of Ubuntu, on the same laptop.)

There is no Xorg*.log in /var/log/ (nor /etc/X11/xorg.conf), but lspci -v gives me:

0000:00:10.0 Display controller: ATI Technologies Inc Rage 128 Pro Ultra TR
        Subsystem: ATI Technologies Inc Rage 128 Pro Ultra TR
        Flags: bus master, stepping, 66MHz, medium devsel, latency 255, IRQ 48
        Memory at 94000000 (32-bit, prefetchable) [size=64M]
        I/O ports at 0400 [size=256]
        Memory at 90000000 (32-bit, non-prefetchable) [size=16K]
        Expansion ROM at 90020000 [disabled] [size=128K]
        Capabilities: [50] AGP version 2.0
        Capabilities: [5c] Power Management version 2
        Kernel driver in use: aty128fb

[tournesolo (tournesolo)]

(Tried to add hardware info via apport-collect, but it doesn't seem to work. Here is what I see on the console, after having authorised it to change launchpad:

$ apport-collect 504217
Logging into Launchpad... You have to allow "Change anything" privileges.
Downloading bug information...
Bug title: cannot resume from sleep: screen garbled [karmic powerpc]
Ignoring task https://api.edge.launchpad.net/beta/ubuntu
No additional information collected.
)

[Jeremy Foshee (jeremyfoshee)]

Hi tournesolo,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 504217

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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