<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><br />Hi all and thanks for all the advice.<br /><br />I had completely misunderstood the BIOS setting and through the RTC wakeup should be enable for it to work. Disabling that and hpet works for me now, using first test of'<br />/usr/sbin/rtcwake --mode off -s 120<br />I'm reckonin that the rest will fall into place now.<br /><br />One question regarding hpet: Can I expect any performance hit or other problems on mythtv_backend, by disabling it? Google throws up discussions pointing both ways, depending on system use. Mostly just curious, but could there be a smarter way of disabling at shutdown, instead of generically as a kernel parameter?<br /><br />BR.<br /><br />--Marius--<br /> </html>