Public bug reported: At bootup following error is seen: [ 12.041110] rtc_cmos 00:02: RTC can wake from S4 [ 12.098168] rtc_cmos: probe of 00:02 failed with error -16
iotadmin@localhost:~$ cat /proc/version* Linux version 4.15.18+ ([email protected]) (gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)) #1 SMP Thu Feb 27 21:58:50 PST 2020 I have following configs in my kernel. CONFIG_RTC_LIB=y CONFIG_RTC_MC146818_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_SYSTOHC=y CONFIG_RTC_NVMEM=y CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_DEV=y CONFIG_RTC_I2C_AND_SPI=y CONFIG_RTC_DRV_CMOS=y iotadmin@localhost:~$ ls -l /dev/ | grep rtc iotadmin@localhost:~$ iotadmin@localhost:~$ timedatectl Local time: Fri 2020-02-28 09:58:20 UTC Universal time: Fri 2020-02-28 09:58:20 UTC RTC time: n/a Time zone: n/a (UTC, +0000) System clock synchronized: yes systemd-timesyncd.service active: no RTC in local TZ: no iotadmin@localhost:~$ hwclock --debug hwclock from util-linux 2.31.1 System Time: 1582883907.124128 Trying to open: /dev/rtc0 Trying to open: /dev/rtc Trying to open: /dev/misc/rtc No usable clock interface found. hwclock: Cannot access the Hardware Clock via any known method. iotadmin@localhost:~$ iotadmin@localhost:~$ uname -a Linux localhost 4.15.18+ #1 SMP Thu Feb 27 21:58:50 PST 2020 x86_64 x86_64 x86_64 GNU/Linux iotadmin@localhost:~$ iotadmin@localhost:~$ cat /proc/devices Character devices: 1 mem 4 /dev/vc/0 4 tty 4 ttyS 5 /dev/tty 5 /dev/console 5 /dev/ptmx 5 ttyprintk 7 vcs 10 misc 13 input 21 sg 89 i2c 128 ptm 136 pts 180 usb 189 usb_device 204 ttyMAX 242 ptp 243 pps 244 rpmb 245 ttyDBC 246 bsg 247 hmm_device 248 watchdog 249 rtc 250 dax 251 dimmctl 252 ndctl 253 tpm 254 gpiochip Block devices: 7 loop 8 sd 65 sd 66 sd 67 sd 68 sd 69 sd 70 sd 71 sd 128 sd 129 sd 130 sd 131 sd 132 sd 133 sd 134 sd 135 sd 179 mmc 259 blkext ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Description changed: - iotadmin@localhost:~$ cat /proc/version* - Linux version 4.15.18+ ([email protected]) (gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)) #1 SMP Thu Feb 27 21:58:50 PST 2020 - - At bootup following error is seen: [ 12.041110] rtc_cmos 00:02: RTC can wake from S4 [ 12.098168] rtc_cmos: probe of 00:02 failed with error -16 + + iotadmin@localhost:~$ cat /proc/version* + Linux version 4.15.18+ ([email protected]) (gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)) #1 SMP Thu Feb 27 21:58:50 PST 2020 I have following configs in my kernel. CONFIG_RTC_LIB=y CONFIG_RTC_MC146818_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_SYSTOHC=y CONFIG_RTC_NVMEM=y CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_DEV=y CONFIG_RTC_I2C_AND_SPI=y CONFIG_RTC_DRV_CMOS=y iotadmin@localhost:~$ ls -l /dev/ | grep rtc iotadmin@localhost:~$ iotadmin@localhost:~$ timedatectl - Local time: Fri 2020-02-28 09:58:20 UTC - Universal time: Fri 2020-02-28 09:58:20 UTC - RTC time: n/a - Time zone: n/a (UTC, +0000) - System clock synchronized: yes + Local time: Fri 2020-02-28 09:58:20 UTC + Universal time: Fri 2020-02-28 09:58:20 UTC + RTC time: n/a + Time zone: n/a (UTC, +0000) + System clock synchronized: yes systemd-timesyncd.service active: no - RTC in local TZ: no + RTC in local TZ: no iotadmin@localhost:~$ hwclock --debug hwclock from util-linux 2.31.1 System Time: 1582883907.124128 Trying to open: /dev/rtc0 Trying to open: /dev/rtc Trying to open: /dev/misc/rtc No usable clock interface found. hwclock: Cannot access the Hardware Clock via any known method. iotadmin@localhost:~$ - iotadmin@localhost:~$ uname -a Linux localhost 4.15.18+ #1 SMP Thu Feb 27 21:58:50 PST 2020 x86_64 x86_64 x86_64 GNU/Linux iotadmin@localhost:~$ iotadmin@localhost:~$ cat /proc/devices Character devices: - 1 mem - 4 /dev/vc/0 - 4 tty - 4 ttyS - 5 /dev/tty - 5 /dev/console - 5 /dev/ptmx - 5 ttyprintk - 7 vcs - 10 misc - 13 input - 21 sg - 89 i2c + 1 mem + 4 /dev/vc/0 + 4 tty + 4 ttyS + 5 /dev/tty + 5 /dev/console + 5 /dev/ptmx + 5 ttyprintk + 7 vcs + 10 misc + 13 input + 21 sg + 89 i2c 128 ptm 136 pts 180 usb 189 usb_device 204 ttyMAX 242 ptp 243 pps 244 rpmb 245 ttyDBC 246 bsg 247 hmm_device 248 watchdog 249 rtc 250 dax 251 dimmctl 252 ndctl 253 tpm 254 gpiochip Block devices: - 7 loop - 8 sd - 65 sd - 66 sd - 67 sd - 68 sd - 69 sd - 70 sd - 71 sd + 7 loop + 8 sd + 65 sd + 66 sd + 67 sd + 68 sd + 69 sd + 70 sd + 71 sd 128 sd 129 sd 130 sd 131 sd 132 sd 133 sd 134 sd 135 sd 179 mmc 259 blkext -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1865129 Title: /dev/rtc missing despite having configs for RTC in kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1865129/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
