The problem was (partly) solved.
After asking for help in the linux kernel development mailing list Niklas
Cassel (one of the developers) wrote:
- The commit 1527f69204fe ("ata: ahci: Add Green Sardine vendor ID as
board_ahci_mobile") added the - PCI vendor and device id to the list of
supported AHCI controllers using the low power board
- version:
{ PCI_VDEVICE(AMD, 0x7901), board_ahci_low_power }, /* AMD Green
Sardine */
- Before the commit in question, your AHCI controller relied on this catch-all
entry:
/* Generic, PCI class code for AHCI */
{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
- which does not enable/allow any low power mode at all.
- Now, I do think that low power modes *should* work with this AHCI controller.
Most likely, it is - simply the optical drive that does not work well when the
HBA initiates a low power mode on the
- link.
.
.
.
- A way do disable lpm is to do:
$ ls -al /sys/class/scsi_host/host*
- Find your device in the list. My device is:
/sys/class/scsi_host/host13/
- Print the current lpm policy for your device:
$ cat /sys/class/scsi_host/host13/link_power_management_policy
med_power_with_dipm
- Anything other than "max_performance" means that you have (a varying degree)
of low power modes
- enabled.
$ sudo sh -c "echo max_performance >
/sys/class/scsi_host/host13/link_power_management_policy"
$ cat /sys/class/scsi_host/host13/link_power_management_policy
max_performance
- Try reading from the optical drive after ensuring that the policy is
"max_performance".
This solved the problem.
As the kernel parameter to disable lpm only works from kernel 5.18 onwards, I
had to find another way to force this setting, so I did:
$ apt install sysfsutils
and added in /etc/sysfs.conf the line:
class/scsi_host/host0/link_power_management_policy = max_performance
As long as I don't mess around with my hardware, the host number should stay
the same.
Of course, if anyone uses this method, he/she should find out his host number
for the controller of the optical drive in question and substitute it in the
hostnn part.
A definite solution will probably be a future patch in libata.
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1968155
Title:
Multiple errors with DVD drive: ata1: SError: { PHYRdyChg CommWake
10B8B DevExch }
Status in linux package in Ubuntu:
Confirmed
Bug description:
Going from kernel version 5.4.0-99 to 5.4.0-100 my optical drive (Pioneer
BD-RW BDR-207M) became unusable. I include a selection of the errors, the
dmesg errors immediately after boot without trying to use the drive yet, the
system specs from system report, and the output of the inxi -Fdxxx commandin
the file attachment.txt.
Up to and including kernel 5.4.0-99 everything worked OK. Kernel 5.13.0-30
also works, from kernel 5.13.0-35 the same problem occurs. Might it be a
problem with atalib?
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jaap 1928 F.... pulseaudio
/dev/snd/controlC1: jaap 1928 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: X-Cinnamon
DistroRelease: Linux Mint 20.3
InstallationDate: Installed on 2022-02-01 (64 days ago)
InstallationMedia: Linux Mint 20.3 "Una" - Release amd64 20220104
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-100-generic
root=UUID=9d60bcb5-650d-484d-ae74-728526cd6db1 ro ipv6.disable=1
elevator=deadline quiet splash nomodeset
ProcVersionSignature: Ubuntu 5.4.0-100.113-generic 5.4.166
RelatedPackageVersions:
linux-restricted-modules-5.4.0-100-generic N/A
linux-backports-modules-5.4.0-100-generic N/A
linux-firmware 1.187.29
RfKill:
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: yes
Tags: una
Uname: Linux 5.4.0-100-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip disk lpadmin plugdev sambashare sudo
systemd-timesync vboxusers
_MarkForUpload: True
dmi.bios.date: 12/01/2020
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P3.80
dmi.board.name: X570 Taichi
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrP3.80:bd12/01/2020:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX570Taichi:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jaap 1928 F.... pulseaudio
/dev/snd/controlC1: jaap 1928 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: X-Cinnamon
DistroRelease: Linux Mint 20.3
InstallationDate: Installed on 2022-02-01 (64 days ago)
InstallationMedia: Linux Mint 20.3 "Una" - Release amd64 20220104
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-100-generic
root=UUID=9d60bcb5-650d-484d-ae74-728526cd6db1 ro ipv6.disable=1
elevator=deadline quiet splash nomodeset
ProcVersionSignature: Ubuntu 5.4.0-100.113-generic 5.4.166
RelatedPackageVersions:
linux-restricted-modules-5.4.0-100-generic N/A
linux-backports-modules-5.4.0-100-generic N/A
linux-firmware 1.187.29
RfKill:
0: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: yes
Tags: una
Uname: Linux 5.4.0-100-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip disk lpadmin plugdev sambashare sudo
systemd-timesync vboxusers
_MarkForUpload: True
dmi.bios.date: 12/01/2020
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P3.80
dmi.board.name: X570 Taichi
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrP3.80:bd12/01/2020:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX570Taichi:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
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