You have been subscribed to a public bug: I'm on Ubuntu Desktop 14.04 with the standard 13.13.0-32 kernel.
The Suspend feature works, if the sleep is for a short time. For longer duration's, shortest I've seen is 90 minutes, the machine will not resume. When I say not resume, I mean the chassis fan LED will flash once and nothing powers up. Due to the time, it is very difficult to debug. From now on I am going to put the machine to sleep with the 'pm_trace' feature. Hopefully it will provide some useful feedback. I have not attempted to hibernate for a length of time, though I presume it to have the same problem. In addition to this problem, after a failed resume, the reset button and holding the power button does not work. I have to physically cut the power. Also, I installed the latest kernel, v3.16-rc7, but after logging on I had no Desktop (only the wallpaper) and the keyboard did nothing. Being new to linux I'm not sure how to do anything in text mode. I don't have the time to step back through each version. If somebody knows which version may work I can give it a try. I also tried installing the 14.10 Desktop, but that version consumed so much CPU it took 60 seconds to open a window and a full 20 minutes to shut down. The Live version also behaved this way but I went ahead and installed it anyway. A few notes about my system: Radeon HD6790 GPU. Problem Exists with both of their available drivers (this includes their beta driver stated as being 14.04 friendly). I cannot use the Ubuntu driver as the GPU fan runs at full speed and slows the system down. ASUS M4A78LT-LE mainboard, with latest 3.01 BIOS. 2 Kingston 4GB DDR3 modules. I'm happy to perform a test and run any utilities, but like I said, I don't have the time to be downloading/installing version after version to find something that might work. The most recent pre-releases have not worked. The current stable version runs smoothly, except for the suspend issues. Update: Using the latest mainline kernel, although I'm not able to log into a Desktop Environment (they all crash), I am able to use the terminal (CTRL ALT F1). I have added ALL modules to /etc/default/acpi-support and the problem persists. The suspend command sudo sh -c "sync; echo 1 > /sys/power/pm_trace; pm-suspend" produced a Magic number but there was no accompanying "hash matches" line. The next step, and I need some help, is to modify the kernel as stated at https://wiki.ubuntu.com/Kernel/Reference/S3 by introducing some ASM feedback into arch/x86/kernel/acpi/wakeup_64.S. If anybody is willing to help, if anybody is even reading this, I would like to test using my current kernel 3.13.0 and it's targeted for AMD64. ** Affects: linux (Ubuntu) Importance: Low Status: Incomplete ** Tags: bot-comment kernel-bug resume suspend -- Resume from suspend fails after a long sleep https://bugs.launchpad.net/bugs/1352886 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
