This is interesting. `echo mem > /sys/power/state` This command was instant S3. The screen went black and the power light immediately began to blink.
However...for lid switch the power light takes around 10 seconds to begin to pulse, but the state immediately switches. Fri 17 May 2019 09:48:22 AM CEST - state: open Fri 17 May 2019 09:48:23 AM CEST - state: open Fri 17 May 2019 09:48:24 AM CEST - state: open Fri 17 May 2019 09:48:25 AM CEST - state: closed Fri 17 May 2019 09:48:26 AM CEST - state: closed Fri 17 May 2019 09:48:27 AM CEST - state: closed It seems although detection if immediate, it takes 10 seconds to process? On Thu, May 16, 2019 at 6:05 PM Andrea Righi <andrea.ri...@canonical.com> wrote: > Hi Chris, just to make sure I understand (from a kernel perspective), > can you confirm that `echo mem > /sys/power/state` is also fast at > reaching the suspend state? > > In that case it would be interesting to check if there's a delay at > detecting the state of the lid switch. For this, could you run the > following command in a bash session: > > $ while :; do echo `date` - `cat /proc/acpi/button/lid/LID0/state`; > sleep 1; done > > Close the lid, re-open it and you should notice something like this: > > Thu May 16 17:50:42 CEST 2019 - state: open > Thu May 16 17:50:43 CEST 2019 - state: open > Thu May 16 17:50:44 CEST 2019 - state: open > Thu May 16 17:50:45 CEST 2019 - state: closed > Thu May 16 17:50:46 CEST 2019 - state: closed > Thu May 16 17:50:47 CEST 2019 - state: closed > Thu May 16 17:50:48 CEST 2019 - state: open > Thu May 16 17:50:49 CEST 2019 - state: open > Thu May 16 17:50:50 CEST 2019 - state: open > ^C > > Note that I have set the "lid close action" to do nothing, in this way > we can better isolate the problem. Thanks. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1829399 > > Title: > Lid switch triggered suspend takes much longer than UI triggered > suspend > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829399/+subscriptions > -- Chris Gregan Engineering Manager Solutions QA/Techops cgre...@irc.canonical.com -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829399 Title: Lid switch triggered suspend takes much longer than UI triggered suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829399/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
