Score:1

Description of /proc/driver/rtc output

cn flag

I probably have a dead CMOS (BIOS main board?) battery. When I power on my computer the date and time is reverted to an old date (something like 2009-1-1).

So, I checked the following:

$ cat /proc/driver/rtc 
rtc_time    : 09:43:09
rtc_date    : 2023-03-23
alrm_time   : 08:34:43
alrm_date   : 2009-01-01
alarm_IRQ   : no
alrm_pending    : no
update IRQ enabled  : no
periodic IRQ enabled    : no
periodic IRQ frequency  : 1024
max user IRQ frequency  : 64
24hr        : yes
periodic_IRQ    : no
update_IRQ  : no
HPET_emulated   : yes
BCD     : yes
DST_enable  : no
periodic_freq   : 1024
batt_status : okay

Can somebody explain me what do these mean? I haven't found anything useful after googling it. Especially the fields alrm_time , alrm_date, and batt_status.

David avatar
cn flag
They seem very clear. Alarm Time, Alarm Date and Battery Status
FedKad avatar
cn flag
I am 99 percent sure that `batt_status` is **not** "okay".
David avatar
cn flag
As soon as the machine starts up the battery gets some current so that is what is giving the okay status. The battery very well may not be holding a charge when the machine has no external power.
FedKad avatar
cn flag
Yes, that's what I am suspecting also @David. Anyway, I have to dig into the mainboard to find the battery.
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