On a Thinkpad X201, with the soundcard
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06) Subsystem: Lenovo Device 215e Flags: bus master, fast devsel, latency 0, IRQ 27 Memory at f2520000 (64-bit, non-prefetchable) [size=16] Capabilities:  Power Management version 2 Capabilities:  MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities:  Express Root Complex Integrated Endpoint, MSI 00 Capabilities:  Virtual Channel Capabilities:  Root Complex Link Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel
the sound stops after around a minute when using speakers and the speaker sound does not return.
Till, as a superuser, the commands
echo 1 | tee /sys/module/snd_hda_intel/parameters/power_save echo Y | tee /sys/module/snd_hda_intel/parameters/power_save_controller
are invoked and a couple of seconds pass.
Then the sound returns, but stops, as before, after around a minute.
The sound of the headphones works at every moment perfectly.
That the sound stopped neither happened, before upgrading, under OpenSUSE 42.3 nor does it currently happen under Windows 10.
Does anyone have any idea how to fix this issue for good? Thank you very much![/size]