epoch1970 wrote: > Difficult question IMHO. > A few things I would check right after wake-up : > - system time. If the clock is off then plenty of things can go wrong. > - system load. Perhaps the system is too busy for LMS to run well. > - network status and interface parameters. Perhaps the machine renews > its DHCP lease or renegociates link parameters with the switch. > - possibly hard drives/data links parameters. > > I've seen all this go wrong (and much more) when suspending linux > machines. Trying all suspend quirks can't really harm. Also, I don't > know how the PM system you're using works, but what I do personally is > to stop services, unload kernel modules� as needed before sleep, and > restart these upon wake-up. A friendly machine (and kernel) won't need > anything special; temperamental ones can do really funny things until > you've found the exact issue and solve it at sleep time. > > My debugging method is about this : > - unplug anything unnecessary from the machine, including networking. > Keep only keyboard/console. > - check the bios is reasonably recent (beware of a 1.0 version), set to > reasonable parameters, that the cmos battery is not depleted (can cause > time/date issues.) > - try suspend with my system running a minimal set of services > (something like single mode, with ACPI active). It should work (perform > normally). > - if it does not work, look for people with similar problems and the > same hardware. Try a newer/older version of linux. Kernel versions do > matter, unfortunately. > - if it does work, check it works repeatedly, and not a single time. > Also, check the machine does reboot and shutdown correctly after > sleep/wake cycles� > - then gradually add the hardware/drivers and apps I want to run and > see when it starts to break. When the breaking point is found, find the > way to stop the culprit before sleep, and restart it at wake-up. > > As already said, on some setups I've had to proceed to quite a few > seemingly futile stop/starts. However, I have yet to see the need to > restart LMS.
Thanks for your elaborate answer! I am happy and sad :-) Happy that I am not completely stupid in solving this myself and happy about the detailed recipe you provided. Sad that there is no easy fix. FYI: The server is dedicated to running LMS and doesn't have any peripherals attached (not even screen mouse and keyboard, only motherboard RAM and HDD) So with a dual-core atom processor and 2 GB RAM it normally has no problem performance wise. Network is more suspect. However, the fact the this intermittent playback ONLY occurs after returning from suspend makes me think it is a combination of waking up and network configuration (perhaps router related as you point out). The issues is complicated further by the fact that it only occurs sometimes. I will start with the easiest: suspend quirks. This morning I tried with suspend --quirk-s3-bios and so far no problems, but this may be accidental. Thanks again - I will report when/if I find a solution. -thomas ------------------------------------------------------------------------ tuc's Profile: http://forums.slimdevices.com/member.php?userid=34475 View this thread: http://forums.slimdevices.com/showthread.php?t=48521
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