The fglrx driver saves all used video memory to system memory before suspending. When you suspend to disk all that memory also has to be swapped out to the swap partition. If you have a graphics card with lots of memory and not a lot of available system memory, the saving of video memory will cause a lot of paging. This will affect your performance on suspend/resume. If your swap partition is too small that may cause suspend to fail completely.
Three factors that will have a big impact on your suspend performance: 1. amount of video memory (reported by amdcccle) 2. amount of available system memory (reported by free, 2nd line "-/+ buffers/cache") 3. amount of available swap space (reported by free, 3rd line) Some rules of thumbs: 1. You should have about 1GB more system memory than video memory, more is better 2. You should have more swap space than system memory, typically by a factor 2 Possible remedies (depending on your situation): 1. make sure your swap partition is big enough, typical recommendation is 2x amount of RAM 2. get more RAM (always a good idea and a cheap option to improve overall system performance and responsiveness) -- Resume from sleep fails / extremely slow with fglrx https://bugs.launchpad.net/bugs/561292 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
