** Description changed:
[Impact]
The BIOS PCI device configuration and restoration during modern standby
resume will check the ACPI function _REG value, expecting it to be
0x2(PCI_Config), and it returned by the operating system.
The Windows will return 0x2 (PCI_Config) and than PCI device
configuration and restoration function will completely, But the Ubuntu
return 0x3 (EmbeddedControl) which cause SATA HDD password unlock
function to not work during Modern Standby resume.
[Fix]
The commit which will be included in v6.16 explicitly set all devices into D0
during initialization, so that _REG method works as expected.
https://lore.kernel.org/all/[email protected]/
4d4c10f763d78 PCI: Explicitly put devices into D0 when initializing
[Test]
- 1. Install ubuntu 2404 on any machine, and enabled SATA HDD password.
- 1.1 connect SATA HDD on system
- 1.2 press F2 enter BIOS menu
- 1.3 choose the menu “Passwords“ in the left side
- 1.4 setup passowrd in “Internal HDD Passward“
- 1.5 save setting and boot into OS
+ 1. Install ubuntu 2404 on any machine(the issue has been found on Dell Pro
Micro Mini PC with AMD Ryzen Processors), and enabled SATA HDD password.
+ 1.1 connect SATA HDD on system
+ 1.2 press F2 enter BIOS menu
+ 1.3 choose the menu “Passwords“ in the left side
+ 1.4 setup passowrd in “Internal HDD Passward“
+ 1.5 save setting and boot into OS
2. After resume from suspend with w/ SATA HDD installed and hdd password set.
3. The machine should keep working and the SATA HDD could be accessed
[Where problems could occur]
It's trivial to set the device to D0 state while iniailizing, I don't see it
could lead to any regression.
** Changed in: linux (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-6.11 (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2110090
Title:
System will restart while resuming with SATA HDD or nvme installed
with password set
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