For issues regarding suspend to disk i. Linux provides an ACPI subsystem that manages the suspend and resume process. Usually problems occur when resuming, and normally the culprit is a device driver that does not recover from a powered down state. If your computer successfully performs a suspend, then it is quite likely any resume problems are due to another device driver and not the ACPI subsystem.
The approach used here needs to make notes on progress during resume and be able to recover them after a manual reboot. But there is no non-volatile storage available at the time resume is bringing up your computer.
The only hardware on a PC motherboard that retains information across power cycles is the real time clock RTC , so that is what is used. Caveat Emptor: Using the following debug suggestions will radically change the values in your RTC chip, so much so that your file system will think it has been eons since the last fsck. You can avoid a long fsck delay by using 'tune2fs'. Asked 9 years, 10 months ago.
Active 2 months ago. Viewed 22k times. Improve this question. LanceBaynes LanceBaynes Add a comment. Active Oldest Votes. View if the package is installed, enter this command in terminal rpm -qa grep pm-utils This should output the version you have installed. Improve this answer. Becker J. Becker 4, 3 3 gold badges 24 24 silver badges 40 40 bronze badges. I even installed pm-utils-devel. I will see the dmesg later, thank you! The dmesg output will tell you what is happening behind the scene.
More importantly, what in particular might be failing. O and BTW, you don't need the devel package. You only need them when compiling code, so feel free to purge. After disabled KMS, if the video after resume still corrupts, you can try to suspend the system by using some video quirks.
Read the manpage of the pm-suspend program for a very detailed explanation of all the quirks available, and try the combinations of them from command-line. At the same time, please help to file a bug against the pm-utils package with a patch about your changes so it can benefit the mass.
A common issue found on systems upgrading from old versions of Debian is the enabling of quirk-s3-bios freezes the system during suspend. If your system freezes during suspend, check the pm-suspend. Kernel testing facility The kernel has a Suspend testing facility changelog. Next, it will wait for 5 seconds and carry out the resume operations needed to transition the system back to the fully functional state. I haven't found a way to figure out which module, other than trial-and-error.
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Create a free Team What is Teams? Learn more. How to debug pm-suspend freeze? Ask Question. Asked 5 years, 8 months ago.
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