Double checking this on my laptop, and assuming it’s the same problem.
After installing tuned-ppd:
The power save and balanced profile set the power_save value to 10.
The performance profile uses what ever the kernel setting is.
If you want to utilize the kernel settings and leave tuned installed:
copy the profiles over to /etc/tuned/profiles
sudo cp -p -R /usr/lib/tuned/profiles/{balanced,powersave} /etc/tuned/profiles/
using your editor of choice with admin privileges modify:
/etc/tuned/profiles/balanced/tuned.conf
/etc/tuned/profiles/powersave/tuned.conf
remove:
[audio]
timeout=10
If you want to use the tuned profile settings.
copy the profiles over to /etc/tuned/profiles
sudo cp -p -R /usr/lib/tuned/profiles/{balanced,powersave,throughput-performance} /etc/tuned/profiles/
using your editor of choice with admin privileges modify:
/etc/tuned/profiles/balanced/tuned.conf
/etc/tuned/profiles/powersave/tuned.conf
Change 10 to 0
[audio]
timeout=0
/etc/tuned/profiles/throughput-performance/tuned.conf
Add
[audio]
timeout=0
I added it above the [video] section.
You could also uninstall tuned and tuned-ppd