<html><br />On Saturday, December 9, 2017 21:27 CET, Swanseasurfing <swanseasurfing@gmail.com> wrote:<br /> <blockquote type="cite" cite="CAJL3cphF+_1evBqtq+nxn_QjqAXRKE807=tQB4ze-WxhjD8eaA@mail.gmail.com"><div dir="auto">I set up my mythbackend long ago so I don‘t remember all steps properly. It’s an older mythbuntu release. To my mind the folllowing steps were important (these were mentioned in the discussion):</div><div dir="auto"> </div><div dir="auto">Disable HPET (kernel parameter)</div><div dir="auto">Disable RTC wakeup in BIOS</div><div dir="auto">Setting the timezone (did I have to switch Linux and BIOS to UTC?)</div><div dir="auto">Configure mythwelcome and mythbackend according to the wiki dicumentation</div><div dir="auto">Use ACPI Wakeup according to the wiki</div><div dir="auto">Creating several scripts (e.g. to do some checks before shutdown and to run fstrim once a day)</div><div dir="auto">Use a short time being idle before shutdown (otherwise EIT scans would start so that the machine won‘t shutdown) - To my mind I use 5 Minutes</div><div dir="auto"> </div><div dir="auto">Works fine since years. Maybe these steps give a hint on the solving your problem.</div><div dir="auto"> </div><div dir="auto">Kind Regards</div><div dir="auto"> Jens</div><div dir="auto"> </div></blockquote>Thanks Jens et al for very useful information.<br /><br /> I had completely misunderstood the setting in BIOS, thinking that Wake up from RTC should be ENABLED for this to work. After disabling that and also HPET in grub kernel command line, everything worked as it should.<br /><br />I'm not suer if I should expect any negative consequences of running without HPET? Googling suggests that the system might run better, or worse without it. If so, was wondering if there's any way of switching it off on-the-fly, before shutdown?<br /><br /><br />Anyway, system now wakies up as it should.<br /><br />BR.<br /><br />--Marius--<br /><br /><br /><br /><br /> </html>