Ah, I see the report refers to a Core Duo processor and that is what the
T61p has too (Intel T7700 to be precise).
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Title:
Suspend stopped workin
Recently I installed Ubuntu 20.04.3 LTS on an old Lenovo laptop (T61p).
I was disappointed to discover that suspend did not work (as described
in this report, black screen and no way to recover). I tried two
version 5 kernels (5.13.0-27-generic and 5.8.0-43-generic).
As a wild guess I downloaded
Switching back from Kernel 5.13.0 to 5.11.0 has fixed the issue. So this
appears to be a kernel regression.
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Title:
Suspend stopped working since
To be clear, the last dmesg is from after I rebooted the "frozen"
computer (which wouldn't respond to Control-Alt-F1/F8/etc or any other
keys). Since it shows kernel version, etc.
I pushed some keys, the backlight came on like it was going to boot, and
then it just stopped there. But I think the p
NOPE, NEVERMIND. The issue is still happening. I thought I did a full
reboot, with [deep], and came back. But I just came back after an hour
or two and the BACKLIGHT turned on, but it still wouldn't come back from
suspend.
This seems like it attempted to come back online:
$ journalctl -o short-pr
Okay, so I added to my GRUB kernel parameters string:
acpi_sleep=s3_bios,s3_mode
per here:
- http://powersave.sourceforge.net/powersave/Suspend2Ram.html
- https://wiki.ubuntu.com/Kernel/KernelBootParameters
and ran GRUB config. And set myself back to:
echo deep | sudo tee /sys/power/mem_sleep
I JUST got the "you have a new version available" and clicked update
last night. From ~21.xx to 21.10 and it won't come back from deep sleep.
Acer C740P laptop with Ubuntu desktop.
Switching to:
echo shallow | sudo tee /sys/power/mem_sleep
from the previous comment allows me to come back. Howev
As a temporary workaround, exists a lts kernel ppa from ubuntu 18.04
which I can use at 20.04?
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Title:
Suspend stopped working since kernel 5.4 (
@kaihengfeng
Same problem with mainline kernel 5.11.0-051100rc3 (build binaries
verified).
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Title:
Suspend stopped working since kernel 5.4 (ubu
@alexhung
Deep is already selected "s2idle [deep]". If I select s2idle, it looks
like the same problem.
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Title:
Suspend stopped working since ke
Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.11-rc3/amd64/
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Title:
Suspend stopped working since kernel
You can check whether s2idle or suspend (s3) is used by kernel 5.4 &
kernel 4.15 by
$ cat /sys/power/mem_sleep
s2idle [deep]
where deep is s3
Switching one to another can be done by "echo deep | sudo tee
/sys/power/mem_sleep" or "echo s2idle ...").
If switching to "deep" fixes your problem, you
** Summary changed:
- Suspend stopped working with kernel 5.4 (ubuntu 20.04)
+ Suspend stopped working since kernel 5.4 (ubuntu 20.04)
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Title:
S
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