On 04/11/2025 07:23, Patrick Wigmore wrote:
On Mon, 03 Nov 2025 20:49:18 +0000, Tim wrote:
The PC will not shutdown via the shutdown button of via the CLI
interface by issuing the sudo shutdown -h now.
I have found that using
sudo shutdown -Ph now
from the CLI will shut the PC down.
I've always been under the impression that you need to specify -P if
you want the system to power off after shutting down, though the exact
behaviour could depend on the system firmware. In which case, the
behaviour you describe when running `shutdown -h now` is expected. But
this doesn't seem to explain why the shutdown button doesn't work.
The burping noise happens every time you play a sound or video, but
once it has burped at the start of the file the playback is
perfectly OK.
This is reminiscent of an issue I once had with my laptop, which would
make a pop sound whenever audio output was initiated. My workaround
was to disable the auto power-save function of the snd_hda_intel
kernel module.
The the relevant parameter values can be read/written in the files:
/sys/module/snd_hda_intel/parameters/power_save
/sys/module/snd_hda_intel/parameters/power_save_controller
The meaning of these parameters is described by the output of
sudo modinfo snd_hda_intel
OK when I try I get the following info
mit@biggie:~~ $ sudo modinfo snd_hda_intel
filename: /lib/modules/6.1.0-40-amd64/kernel/sound/pci/hda/snd-hda-intel.ko
description: Intel HDA driver
license: GPL
<snip> (Lots alias and signatures)parm: power_save:Automatic
power-saving timeout (in second, 0 = disable). (xint)
<snip
For some reason my notes on the matter do not cover how I made the
configuration persistent, but it looks like the usual way is to write
a *.conf file in /etc/modprobe.d/ containing, for instance, the line:
option snd_hda_intel power_save=0
So my understanding is that I need to make a .conf file, saved in
/etc/modprobe.d/
Which I did called it
intel_snd.conf
Rebooted still getting noise
I did a lsmod for intel and I get this
mit@biggie:~~ $ lsmod | grep intel
btintel 45056 1 btusb
bluetooth 962560 46 btrtl,btmtk,btintel,btbcm,bnep,btusb,rfcomm
intel_rapl_msr 20480 0
intel_rapl_common 32768 1 intel_rapl_msr
intel_powerclamp 20480 0
kvm_intel 380928 0
snd_hda_intel 61440 2
snd_intel_dspcfg 36864 1 snd_hda_intel
snd_intel_sdw_acpi 20480 1 snd_intel_dspcfg
kvm 1146880 1 kvm_intel
snd_hda_codec 184320 4
snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
snd_hda_core 122880 5
snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_pcm 159744 4
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
intel_cstate 20480 0
intel_pmc_bxt 16384 1 iTCO_wdt
snd 126976 16
snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm
intel_uncore 212992 0
intel_pmc_core 53248 0
crc32c_intel 24576 13
ghash_clmulni_intel 16384 0
aesni_intel 393216 4
crypto_simd 16384 1 aesni_intel
cryptd 28672 3 crypto_simd,ghash_clmulni_intel
I can see the intel snd module loaded, as my conf is an option I guess I
won't see that, how do I know if it is being looked at during bootup?
See also the modprobe.d(5) man page.
Patrick
Tim H
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