Bug#1135784: power-profiles-daemon: SSD disks hang for several seconds

[Jérémy Lal]

Package: power-profiles-daemon
Version: 0.30-2
Severity: important

Hi,

for several months I have been copping with a computer that
suddenly hangs on basic non-intensive tasks like opening an application,
saving a file, and so on. I thought my PC was dead.

Thanks to some LLM, the best answer I could get - and it fixed the issue -
was that some drive needed
/sys/class/scsi_host/host*/link_power_management_policy
to be
max_performance

or else it would hang there between 1 and 10 seconds, triggering the gnome
prompt "non-responsive, would you like to force quit".

Now I would just like to help improving the situation.
Maybe the brand of SSD should be exempt from alpm, I don't know.

In doubt, here are the relevant hdparm info (the problem is with
one of these two drives):

hdparm -I /dev/sda | grep -E 'Model|Serial|revision|speed'
	Model Number:       CT500MX500SSD1                          
	Serial Number:      2402E88CB755        
	Transport:          Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
	Used: unknown (minor revision code 0x006d) 
	   *	Gen1 signaling speed (1.5Gb/s)
	   *	Gen2 signaling speed (3.0Gb/s)
	   *	Gen3 signaling speed (6.0Gb/s)
	Master password revision code = 65534

hdparm -I /dev/sdc | grep -E 'Model|Serial|revision|speed'
	Model Number:       CT2000MX500SSD1                         
	Serial Number:      2324E6E2D9CB        
	Transport:          Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
	Used: unknown (minor revision code 0x006d) 
	   *	Gen1 signaling speed (1.5Gb/s)
	   *	Gen2 signaling speed (3.0Gb/s)
	   *	Gen3 signaling speed (6.0Gb/s)
	Master password revision code = 65534



-- System Information:
Debian Release: forky/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 7.0-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages power-profiles-daemon depends on:
ii  libc6                  2.42-15
ii  libglib2.0-0t64        2.88.1-2
ii  libgudev-1.0-0         238-7+b2
ii  libpolkit-gobject-1-0  127-3
ii  python3                3.13.9-3+b1
ii  python3-gi             3.56.2-1

power-profiles-daemon recommends no packages.

power-profiles-daemon suggests no packages.

-- no debconf information