https://bugzilla.kernel.org/show_bug.cgi?id=216516 --- Comment #5 from kolAflash (kolAflash@xxxxxxxxxxxx) --- Created attachment 301854 --> https://bugzilla.kernel.org/attachment.cgi?id=301854&action=edit kernel log: v6.0-rc6 and v6.0-rc6 with 7123d39dc reverted @Mario (In reply to Mario Limonciello (AMD) from comment #4) > [...] > 1) Does this still exist in a fully unpatched 6.0-rc6? What's the behavior? Yes. That's why I've set the bugs kernel version to 6.0-rc6 ;-) I've attached kernel logs for v6.0-rc6 and for v6.0-rc6 with 7123d39dc reverted. Reverting 7123d39dc on v6.0-rc6 makes the bug disappear. > 2) What bisect points did you use to conclude that this problem on that > particular commit? By chance do you have the bisect log? Sorry, no bisect log saved. But I've explicitly tested 7123d39dc and it's predecessor 7123d39dc^, which is v5.18-rc7. And 7123d39dc is definitely broken and v5.18-rc7 is working fine. > 3) Why don't you just use s2idle instead in BIOS setup? It's very mature on > a modern kernel. Most systems with AMD APUs shipped from OEMs don't offer a > toggle even, which is why I'm surprised you have one. Tested s2idle with the openSUSE-15.4 stock kernel v5.14 and it consumed MASSIVELY more power than S3. I may give s2idle it another try with linux-6.0. QUESTION: Is "echo s2idle > /sys/power/mem_sleep" equivalent to enabling s2idle via ACPI? So I wouldn't need to reboot to change ACPI for testing s2idle. I also thought about using s2disk. But my employer requires me to use a very long LUKS password. So I prefer not to enter the LUKS password every time I wake my notebook. > BTW - I wasn't aware that they offered a BIOS setting for s2ram on 845. Are > you patching the BIOS somehow or just changing a setting? If you change it > back to s2idle does all this go away? Actually S3 is very well hidden. I don't know a way to enable it directly in the BIOS. But it's in the ACPI tables. cat /sys/firmware/acpi/tables/DSDT > dsdt.dat iasl -d dsdt.dat ========== [...] If (!MSCE) { Name (_S3, Package (0x04) // _S3_: S3 System State { 0x03, 0x03, Zero, Zero }) } [...] ========== I changed that "if" statement, recompiled and put the ACPI table into the initrd for the kernel to load. See here for details: https://www.reddit.com/r/AMDLaptops/comments/lg0knl/comment/ikpwpb8/ Side note: If you have an idea how to set that MSCE variable to false without recompiling the kernel, I'd be quite happy :-) -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
