Bug 209671 - 1st Gen Ryzen laptop freeze with CONFIG_PCIEASPM_POWERSAVE=y
Summary: 1st Gen Ryzen laptop freeze with CONFIG_PCIEASPM_POWERSAVE=y
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: PCI (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: drivers_pci@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-10-14 08:32 UTC by Kai-Heng Feng
Modified: 2020-10-14 08:33 UTC (History)
0 users

See Also:
Kernel Version: mainline
Subsystem:
Regression: No
Bisected commit-id:

Attachments
dmesg (93.88 KB, text/plain)
2020-10-14 08:32 UTC, Kai-Heng Feng 		Details
lspci, CONFIG_PCIEASPM_DEFAULT=y (66.99 KB, text/plain)
2020-10-14 08:33 UTC, Kai-Heng Feng 		Details
lspci, CONFIG_PCIEASPM_POWERSAVE=y, patch applied (67.05 KB, text/plain)
2020-10-14 08:33 UTC, Kai-Heng Feng 		Details
Add an attachment (proposed patch, testcase, etc.)

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
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