jcgrillo on Laptop Support and Usability (LSU): July 2025 Report

Comment on Laptop Support and Usability (LSU): July 2025 Report

I'm currently running FreeBSD on a gen3 Intel T14. It's been excellent so far, however one minor annoyance has been S3 suspend/resume. Well, suspend works fine, but resuming triggers a restart. I'm hoping the recent S0ix work might fix that.

grahamjperrinOP1y

Which version of FreeBSD, exactly?

freebsd-version -kru ; uname -aKU

pkg repos -el | sort -f

pkg repos -e | grep url

I'm not familiar with the meaning of T14, sorry.

Does the Wi-Fi hardware use iwlwifi(4)?

A kernel panic when waking from sleep might relate to the graphics driver.

jcgrillo 1y

  ~ freebsd-version -kru
  14.3-RELEASE
  14.3-RELEASE
  14.3-RELEASE-p1

  ~ uname -aKU
  FreeBSD t14 14.3-RELEASE FreeBSD 14.3-RELEASE releng/14.3-n271432-8c9ce319fef7 GENERIC   amd64 1403000 1403000

  ~ pkg repos -el | sort -f
  FreeBSD
  FreeBSD-kmods

  ~ pkg repos -e | grep url
      url             : "pkg+https://pkg.FreeBSD.org/FreeBSD:14:amd64/quarterly",
      url             : "pkg+https://pkg.FreeBSD.org/FreeBSD:14:amd64/kmods_quarterly_3",

  ~ sysctl net.wlan.devices
  net.wlan.devices: iwlwifi0

  ~ pciconf -vl | grep -B4 VGA
  vgapci0@pci0:0:2:0: class=0x030000 rev=0x0c hdr=0x00 vendor=0x8086 device=0x46a6 subvendor=0x17aa subdevice=0x22e8
      vendor     = 'Intel Corporation'
      device     = 'Alder Lake-P GT2 [Iris Xe Graphics]'
      class      = display
      subclass   = VGA

  ~ kldstat | grep i915
  15    1 0xffffffff838f1000   1e0228 i915kms.ko

Sorry I wasn't clearer before, the laptop is a Lenovo Thinkpad T14 gen3 with an Intel CPU. I poked around in logs a bit but I haven't found anything indicating an error yet.

EDIT: just started reading Ch. 10 on Kernel Debugging[1], will try some things and see if I can extract any useful information. The handbook is so great.

[1] https://docs.freebsd.org/en/books/developers-handbook/kernel...

grahamjperrinOP1y

Thanks.

I have a vague sense that kernel panics with iwlwifi should have been resolved before 14.3-RELEASE. Bugzilla should be fairly close to definitive, expect info to be copious but well-organised.

Alder Lake-P GT2 [Iris Xe Graphics], it's harder to find information.

I spent around a year trying to pinpoint the cause(s) of apparently random failures with different (older) hardware. After switching to Kubuntu on the same hardware, I suspect that the issue with FreeBSD was ACPI-related.

If you have crash files from kernel panics: it should be possible to identify, but not necessarily solve, a problem.

jcgrillo 1y

Yeah to your point earlier a graphics driver issue seems a likely suspect, still haven't found any evidence yet though. Will keep looking.

yjftsjthsd-h 1y

I'm not familiar with the meaning of T14, sorry.

They probably are telling you the model of laptop; ThinkPad T14

Comments