# RTC problems: oscillator stop detected **URL:** \ **Category:** NXP LX2160\ **Tags:** NXP-LX2160\ **Created:** [April 21, 2023, 3:07pm UTC](https://community.solid-run.com/t/rtc-problems-oscillator-stop-detected/630 "2023-04-21T15:07:21Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![maxfritz\_vgm](https://avatars.discourse-cdn.com/v4/letter/m/7c8e57/32.png) [@maxfritz\_vgm](https://community.solid-run.com/u/maxfritz_vgm)\ **Post date:** [April 21, 2023, 3:07pm UTC](https://community.solid-run.com/t/rtc-problems-oscillator-stop-detected/630/1 "2023-04-21T15:07:21Z")
Hi everyone, I am experiencing RTC problems on my SolidRun ClearFog CX board. Whenever there is a power outage for an extended period of time, I lose the system time. This issue occurs regardless of the Linux distribution I am using. Upon checking the kernel log, I noticed a warning message stating: [6.176659] rtc-pcf2127-i2c 2-0051: oscillator stop detected, date/time is not reliable Further investigation showed that the 7th bit at address 03h is set, as mentioned in the datasheet “PCF2129-3139706.pdf,” page 22. Additionally, the battery was measured at 2.9V without load, and the same problem was replicated on multiple SolidRun ClearFog CX boards. I would appreciate any help in resolving this issue, as it is causing inconvenience and disrupts the system’s functionality. Thank you in advance for your support. PS: reading out the registers yield: i2cget -y 2 0x51 27 i 28 | sed ‘s/0x//g’ 00 04 00 a2 08 12 02 00 00 40 80 80 80 80 80 20 82 00 88 08 00 12 02 00 40 08 00 00