Created attachment 461940 [details] lspci -vvv entry for dell e6500 Description of problem: With kernel 2.6.35.6-48.fc14.x86_64, my machine fails to fully enter suspend to ram. It appears to powerdown everything - all indicator lights turn off, display turns off and there is no response to the keyboard including sys-rq. However the powerlight is still on solid. Pressing the power button does not wake the machine and all I can do is poweroff the machine by holding down the power button. The previous kernel (2.6.35.6-45.fc14.x86_64) does not have this issue. I have a Dell Latitude e6500 with an intel gfx card. I note the change log entry for kernel 2.6.35.6-48.fc14.x86_64 has display related patches. Version-Release number of selected component (if applicable): kernel-2.6.35.6-48.fc14.x86_64 How reproducible: Always Steps to Reproduce: 1. Close laptop lid or press suspend button 2. 3. Actual results: Machine appears to suspend, but has solid power light and becomes unresponsive Expected results: Machine suspends to ram, has flashing power light and can be resume by pressing power button. Additional info:
After further testing, this does not appear to be linked to a specific kernel version. Suspend/Resume was very reliable in F13 - and appeared stable in F14 to start with. I have also tried hibernation and this also fails to finish the cycle. I.e. it never powers off and rebooting enters a normal boot up sequence rather than resuming. I also tried running pm-suspend --quirk-none (as currently it seems to fall back to all) and this seemed to help a little, but not conclusively. I also upgraded my bios version sometime after my f14 upgrade from A19 (or possibly A22) to A24. There does appear to be a video firmware update included which may be related. Unfortunately, downgrading the bios does not downgrade the video firmware. Downgrading to A19 (minus video downgrade) does not solve the problem. I also tried using the pm_trace mode in the kernel, but this did not yield consistent results. one time it reported a usb 1.1 hub as the last device, another time nothing was reported against the magic number. Are there any suggestions I can try for tracking down the issue?
FYI: Acer Aspire 5735. Symptoms exactly as described above with Fedora 14, Kernel 2.6.35.9-64.fc14.x86_64, but no problems with previous kernel 2.6.35.6-48.fc14.x86_64. Happy to provide any useful info - say what you need.
I've made some room on my disk and installed F13 again. Suspend/resume has worked flawlessly for nearly 5 days now - 4 of which have been using the F14 kernel 2.6.35.9-64.fc14.x86_64. So this indicates it is a problem in F14 but not (directly) the kernel or the BIOS version.
I've now changed my F14 installation to use F13 xorg-* rpms and also the various mesa rpms too (my system froze after a little while before I did this). Since then, my F14 has had no suspend failures over about 3 days running time.
Is this still happening on a fully updated F14?
I have long since upgraded to F15 where this problem is not present.
Thank you for letting us know.