On Sat, 4 Jan 2020 at 16:37, Jinke Fan <fanjinke@xxxxxxxx> wrote: > > Hi Mike: > Yes, We do check the time in BIOS Menu after first reboot. > > We do some further tests in our X570 platform: > * "AMD Ryzen 7 3700X" with mainboard "ASUS ROG STRIX X570-E GAMING". > * OS is Fedora rawhide, with default Kernel version which is shown as > follows: > $uname -a > Linux bogon 5.5.0-0.rc4.git0.1.fc32.x86_64 #1 SMP Mon Dec 30 06:32:36 > UTC 2019 x86_64 x86_64 x86_64 GNU/Linux > > And we upgrade/downgrade BIOS version from 1005/1201/1404/1405, and we > found out that : > * OLD BIOS version 1005/1201 does not reset the rtc time and keep the > setup rtc time after reboot. > * NEW BIOS version 1404/1405 DO reset the rtc time to 2019/01/01 after > reboot. > > Detailed pictures of the BIOS time after reboot is shown in [2], > > We suspect the BIOS 1201->1404 upgrade might cause this issue. > From x570 BIOS changelog, we found that the big difference between > 1201/1404 is the AMD AM4 PI upgrade from AGESA 1.0.0.3ABBA to AM4 combo > PI 1.0.0.4 patch B, The changelog for my BIOS are the same [1]. Unfortunately, I will not able downgrade to BIOS of 0404 ver for checking assumption because changelog description of ver 1404 contains warning "* You will not be able to downgrade your BIOS after updating to this BIOS version" > If possible, please tell us about the BIOS version and your hardware > platform, which can be get from BIOS UI or using "dmidecode" > in Linux env. The version of my BIOS is the latest. It is 1405 for my motherboard. Here is "dmidecode" paste: https://pastebin.com/akBPAvZJ [1] https://www.asus.com/Motherboards/ROG-Strix-X570-I-Gaming/HelpDesk_BIOS/ -- Best Regards, Mike Gavrilov.
