Bug 209671

Summary:	1st Gen Ryzen laptop freeze with CONFIG_PCIEASPM_POWERSAVE=y
Product:	Drivers	Reporter:	Kai-Heng Feng (kai.heng.feng)
Component:	PCI	Assignee:	drivers_pci (drivers_pci)
Status:	NEW ---
Severity:	normal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	mainline	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	dmesg lspci, CONFIG_PCIEASPM_DEFAULT=y lspci, CONFIG_PCIEASPM_POWERSAVE=y, patch applied

Description Kai-Heng Feng 2020-10-14 08:32:11 UTC

When CONFIG_PCIEASPM_POWERSAVE=y, Latitude 5495, which is a 1st Gen Ryzen Laptop, freeze immediately after boot.

Patch [1] can solve the issue, the system no longer freezes with CONFIG_PCIEASPM_POWERSAVE=y.

[1] https://lore.kernel.org/linux-pci/20201007132808.647589-1-ian.kumlien@gmail.com/

Comment 1 Kai-Heng Feng 2020-10-14 08:32:39 UTC

Created attachment 292953 [details]
dmesg

Comment 2 Kai-Heng Feng 2020-10-14 08:33:20 UTC

Created attachment 292955 [details]
lspci, CONFIG_PCIEASPM_DEFAULT=y

Comment 3 Kai-Heng Feng 2020-10-14 08:33:40 UTC

Created attachment 292957 [details]
lspci, CONFIG_PCIEASPM_POWERSAVE=y, patch applied