My MacBook 4,1 is currently running Karmic 9.10 amd64 and is still having various issues with suspend:
1) Resuming from suspend takes rather long, with a blank screen being shown for at least 15 to 20 seconds before the password entry box appears. This is probably due to KMS being disabled per boot option on this machine, which in turn is necessary to allow the display brightness to be controlled at all. This is a known bug and will supposedly be fixed in kernel version 2.6.32. 2) More often than not, the touchpad reacts very sluggishly after a resume from suspend, so much so that it becomes unuseable. Only a reboot will fix this. This seems to be correlated to an error message that appears in text mode while the machine is resuming, saying something about an interrupt that "nobody cared" about. It seems that whenever this message comes up (which is visible only for a split second) the touchpad won't work, and vice versa. I haven't been able to establish any factors that make this behavior more or less likely, like suspending by closing the lid vs. using the GUI option, or plugging, unplugging and/or replugging the mains adaptor during the suspend. It seems to occur more or less randomly, sometimes at each successive suspend and resume cycle, sometimes not at all for several days. 3) Very rarely, after resuming from suspend the display will be strewn with a pattern of block horizontal lines, each about one centimeter long. This used to happen more ofter with earlier versions of Ubuntu. Suspending and resuming once more usually fixes this. It's probably a graphics driver issue. 4) My MacBook has an international (non-US) keyboard with swapped keycodes 49 and 94. There are numerous bug reports on Launchpad about this not being properly supported in recent versions of Ubuntu. As a workaround, I'm using xmodmap to fix the misdetected keys at start up. After resuming from suspend, however, these xmodmap settings are lost, not always, but most of the time. All the above issues combined make suspend in Ubuntu kind of a game of luck on my computer. The chances of not having to reboot after resuming are currently under fifty percent at best. That's just not good enough, especially compared to how flawlessly suspend works with OS X on the exact same hardware. I'd be more than happy to assist in fixing these issues and to provide any required information. However I'm more of an end-user type than a developer, and I'm not quite sure where and how I should report these bugs. -- [Apple Inc. MacBook4,1] checkbox suspend_test fails with "read-only filesystem" errors https://bugs.launchpad.net/bugs/351706 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
