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Go to SolutionXPS 13 9310, Ubuntu, deep sleep missing
My computer drains a lot of battery when in sleep mode.
I've tried following the steps outlined in this bug report, tried the diagnosis layed out in this question and disabled the "sign of life" options in the BIOS as described here.
I confirmed my system sleeps in the `s2idle` state. Which I suspect is the problem.
$ sudo journalctl | grep "PM: suspend" | tail -2 May 13 18:41:00 mex kernel: PM: suspend entry (s2idle) May 13 20:52:36 mex kernel: PM: suspend exit
However I have 2 issues when trying to follow the above guides: Firstly my `/sys/power/mem_sleep` file does not contain a `deep` option:
sudo cat /sys/power/mem_sleep [s2idle]
And secondly I can't seem to edit the file to add a `deep` option:
$ echo deep | sudo tee /sys/power/mem_sleep deep tee: /sys/power/mem_sleep: Invalid argument $ sudo sh -c 'echo deep > /sys/power/mem_sleep' sh: 1: echo: echo: I/O error
Not being able to close the lid and have the laptop suspend is very annoying. Any help on this would be greatly appreciated.
OS: Ubuntu 20.04, 5.8.0-26-generic / Hardware: Dell XPS 13 9310
DELL-Cares
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Posted November 10th, 2020 10:00
Thank you! We have received the required details. We will work towards a resolution. In the meantime, you may also receive assistance or suggestions from the community members.
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Posted November 11th, 2020 16:00
I had the same problem running Arch Linux on my XPS 13 9300 model but it has been fixed since I added the `mem_sleep_default=deep` boot option. I also have both "sign of life" options and TPM disabled in the BIOS.
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Posted November 11th, 2020 20:00
Depends on your boot-loader. I use systemd-boot but you are probably using grub, so read https://wiki.ubuntu.com/Kernel/KernelBootParameters or similar.
Thanks for all the insights. and sorry to see that so many others share the pain...
I've learned from this thread here that this actually is a firmware issue. where dell chose to not include deep sleep in this computer's firmware. if so i would find that very disappointing, i can't think of a single reason why anyone would appreciate a default battery drain on his suspended laptop. i'm not sure i would have purchased the device if i had known...@bulletmark If indeed it is a firmware issue, then i doubt the boot option would help. or am i wrong?
also: before you set the boot option, did file `/sys/power/mem_sleep` contain a `deep` option which was just not selected or did it only contain the `s2idle` option? I would assume deep was present, but not selected, so your file would have looked something like this:sudo cat /sys/power/mem_sleep [s2idle] deep
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Posted November 12th, 2020 03:00
Yes, after booting without the `mem_sleep_default=deep` kernel option:
sudo cat /sys/power/mem_sleep [s2idle] deepBooting with the that option:
sudo cat /sys/power/mem_sleep s2idle [deep]yes, that's the difference.
my file only displays 1 option:
sudo cat /sys/power/mem_sleep [s2idle]this is what the new firmware apparently is lacking...
FYI the link i described in the intro text gives alternatives to changing the boot menu
DELL-Chris M
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Posted October 19th, 2021 06:00
The S3 deep sleep mode is not available on the 2020 XPS 13 9310. This is by design and will nto change. When using a Dell Ubuntu 20.04 LTS image, the battery discharge issue was resolved with kernel update to 5.8. However, there will be some amount of battery discharge due to the Connected / Modern Standby feature. If there are any issues with battery draining with the Dell Ubuntu Ubuntu 20.04 LTS image, click GHN (Get Help Now) on the right to start a case.
(edited)
DELL-Chris M (old account)
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