Arch Linux

cribari

Member

From: Recife, Brazil

Registered: 2016-01-28

Posts: 84

Website

Re: System freezes while trying to sleep

I have been experiencing this issue since Kernel 6.1.1. Arch is installed in a second M2 SSD in my laptop. Could the issue be somehow related to that reported in the link below (in the Manjaro Forum)?

https://forum.manjaro.org/t/lenovo-t14- … d/145832/9

Last edited by cribari (2023-08-12 01:50:24)

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Linux, street photography and Baroque music enthusiast.

seth

Member

Registered: 2012-09-03

Posts: 58,659

Re: System freezes while trying to sleep

Manjaro link superficially looks like https://wiki.archlinux.org/title/Solid_ … leshooting

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TheDcoder

Member

Registered: 2020-06-06

Posts: 116

Website

Re: System freezes while trying to sleep

Unrelated to latest posts, but I have an update. Recently I switched to a custom-built desktop PC and I cloned my root drive onto here so it has almost the same software config, but I haven't been able to replicate this issue, I'm on the latest zen kernel, let's see if I get the freeze later on.

lucasf

Member

Registered: 2023-08-12

Posts: 2

Re: System freezes while trying to sleep

I have the same problem with AMD RX 6600 and two monitors, one HDMI and the other DP. I tried with kernel 5.15, 6.1 and 6.4, but there is not case.

solstice

Member

Registered: 2006-10-27

Posts: 237

Website

Re: System freezes while trying to sleep

I think I have the same problem. It does not happen all the time here. And when I try manually to suspend to sleep. it works.

But sometimes, when gnome sheel do the automatic suspend, it fails.

I started https://bbs.archlinux.org/viewtopic.php?id=287610

It works for me with the lts 6.1.39 kernel.

Optiplex 7060, i5-8500, iGPU UHD 630, 2 22" screens on displayport

Last edited by solstice (2023-08-12 22:26:06)

TheDcoder

Member

Registered: 2020-06-06

Posts: 116

Website

Re: System freezes while trying to sleep

I think I have the same problem.

Doesn't sound like the same problem to me, this problem results in the system freezing before it enters sleep, it never powers down. If it's powering down for you then it's a different issue.

solstice

Member

Registered: 2006-10-27

Posts: 237

Website

Re: System freezes while trying to sleep

no. I thought it powers down, but in fact not. because the power led is still on, and does not blink like expected.

I was just wrong. The last lines in my log are:

systemd[1]: Reached target Sleep.
systemd[1]: Starting System Suspend...
systemd-sleep[16220]: Entering sleep state 'suspend'...
kernel: PM: suspend entry (deep)

TheDcoder

Member

Registered: 2020-06-06

Posts: 116

Website

Re: System freezes while trying to sleep

Okay, it's the same issue then, welcome to the club.

cikavuve

Member

Registered: 2023-03-21

Posts: 11

Re: System freezes while trying to sleep

I have the same issue.

It seems that it occurs only when or more often warp-cli connect(cloudflare-warp-bin) connection is active.

My cpu is i5-10400f, it does not have iGPU,
gpu is rx 580

NanzeRT

Member

Registered: 2023-08-14

Posts: 2

Re: System freezes while trying to sleep

Same issue.

When it happens mine Caps Lock indicator starts blinking.

CPU: AMD Ryzen 5 4600H with Radeon Graphics
GPU: NVIDIA GeForce GTX 1650 (Laptop) - disabled by driver vfio-pci
iGPU is used

lucasf

Member

Registered: 2023-08-12

Posts: 2

Re: System freezes while trying to sleep

I can confirm that using x11 this problem is not present.

NanzeRT

Member

Registered: 2023-08-14

Posts: 2

Re: System freezes while trying to sleep

I can confirm that using x11 this problem is not present.

I'm having this issue on X11.

chriscjsus

Member

Registered: 2023-06-01

Posts: 11

Re: System freezes while trying to sleep

I have also been bisecting this and I just finished.

# first bad commit: [b006c439d58db625318bf2207feabf847510a8a6] hwrng: core - start hwrng kthread also for untrusted sources

https://git.kernel.org/pub/scm/linux/ke … 847510a8a6

I am not sure what this commit has to do with sleep (s3).  Maybe someone else who has bisected can confirm?

My symptoms are same as OP. Started with kernel 6.1 where system freezes intermittently on suspend.  Power light and fans remain on.  Power button is required to do a hard reset.  On reboot there is nothing in the log that would indicate a cause.  There is no kernel panic (caps lock blinking).  X11 has nothing to do with it.  I think those are separate issues.

Soon I will probably post a bug at bugzilla.kernel.org.  The above commit reverts without conflicts on later kernel versions.

MSI GS40 6QE
CPU:  i7-6700HQ (skylake)
GPU:  GeForce GTX 970M

Last edited by chriscjsus (2023-08-26 11:37:01)

loqs

Member

Registered: 2014-03-06

Posts: 18,032

Re: System freezes while trying to sleep

# first bad commit: [b006c439d58db625318bf2207feabf847510a8a6] hwrng: core - start hwrng kthread also for untrusted sources

https://git.kernel.org/pub/scm/linux/ke … 7787b55906 since 6.4.11

chriscjsus

Member

Registered: 2023-06-01

Posts: 11

Re: System freezes while trying to sleep

My system is not AMD and the commit I posted does not mention TPM.

https://git.kernel.org/pub/scm/linux/ke … 847510a8a6

This is from before 6.1 release.  But I will wait and see if 6.4.11 fixes it.

Last edited by chriscjsus (2023-08-26 06:06:18)

seth

Member

Registered: 2012-09-03

Posts: 58,659

Re: System freezes while trying to sleep

Do you have journals of both conditions to maybe show what rng is brought into the mix w/ the bad commit?
Can you trigger the freeze w/o the bad commit but "random.trust_cpu=on" in the kernel commandline?

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TheDcoder

Member

Registered: 2020-06-06

Posts: 116

Website

Re: System freezes while trying to sleep

Awesome work chriscjsus! Hopefully we are one step closer to solving the mystery.

chriscjsus

Member

Registered: 2023-06-01

Posts: 11

Re: System freezes while trying to sleep

@seth
Arch has CONFIG_RANDOM_TRUST_CPU=y  so random.trust_cpu is on by default.

Last edited by chriscjsus (2023-08-26 08:15:50)

chriscjsus

Member

Registered: 2023-06-01

Posts: 11

Re: System freezes while trying to sleep

Do you have journals of both conditions to maybe show what rng is brought into the mix w/ the bad commit?

What exactly would I search for in the journal?  Searching for "random" doesn't give any random sources.  Searching for "rng" gives the rngd daemon log:
systemd[1]: Started Hardware RNG Entropy Gatherer Daemon.
rngd[898]: Initializing available sources
rngd[898]: [hwrng ]: Initialized
rngd[898]: [rdrand]: Enabling RDSEED rng support
rngd[898]: [rdrand]: Initialized
rngd[898]: [jitter]: JITTER timeout set to 5 sec
rngd[898]: [jitter]: Initializing AES buffer
rngd[898]: [jitter]: Enabling JITTER rng support
rngd[898]: [jitter]: Initialized
rngd[898]: [pkcs11]: No pkcs11 slots available
rngd[898]: [pkcs11]: Initialization Failed
rngd[898]: [rtlsdr]: Initialization Failed

This is the same between both conditions.

seth

Member

Registered: 2012-09-03

Posts: 58,659

Re: System freezes while trying to sleep

Why are you running https://wiki.archlinux.org/title/Rng-tools at all?

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loqs

Member

Registered: 2014-03-06

Posts: 18,032

Re: System freezes while trying to sleep

My system is not AMD and the commit I posted does not mention TPM.

https://git.kernel.org/pub/scm/linux/ke … 847510a8a6

https://git.kernel.org/pub/scm/linux/ke … 29bcd616da which was the initial fix attempt that only disabled some AMD fTPM has more details of the issue.
Does the system have a TPM?  If not please provide a list of loaded modules or devices so we can try and locate which could be feeding the RNG and blocking.
Does disabling rngd have any effect?
Edit:
If the device registers itself with devm_hwrng_register and is in tree it should be one of https://elixir.bootlin.com/linux/v6.4.1 … g_register

Last edited by loqs (2023-08-26 12:50:10)

kaztai

Member

Registered: 2023-01-22

Posts: 10

Re: System freezes while trying to sleep

I updated the kernel from 6.4.8 to 6.4.11 on August 19th, and I haven't experienced this issue for a week since then.
It might be a coincidence, but you all might want to give it a try.

chriscjsus

Member

Registered: 2023-06-01

Posts: 11

Re: System freezes while trying to sleep

Why are you running https://wiki.archlinux.org/title/Rng-tools at all?

I have been running it for a few years to increase /dev/random speed.  I will disable it for now to see if that helps this issue.

chriscjsus

Member

Registered: 2023-06-01

Posts: 11

Re: System freezes while trying to sleep

My system is not AMD and the commit I posted does not mention TPM.

https://git.kernel.org/pub/scm/linux/ke … 847510a8a6

https://git.kernel.org/pub/scm/linux/ke … 29bcd616da which was the initial fix attempt that only disabled some AMD fTPM has more details of the issue.
Does the system have a TPM?  If not please provide a list of loaded modules or devices so we can try and locate which could be feeding the RNG and blocking.
Does disabling rngd have any effect?
Edit:
If the device registers itself with devm_hwrng_register and is in tree it should be one of https://elixir.bootlin.com/linux/v6.4.1 … g_register

My system has an intel firmware TPM.  I have disabled rngd to see if that works.  I will also try 6.4.11.

kaztai

Member

Registered: 2023-01-22

Posts: 10

Re: System freezes while trying to sleep

Unfortunately, the issue has resurfaced just now. Kernel version is 6.4.12.