id = 1762
title = "Linux RTC issues possibly with RTC_UIE_ON, RTC_UIE_OFF"
state = "opened"
created_at = "2023-07-14T17:27:02.151Z"
closed_at = "n/a"
labels = ["target: i386"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/1762"
host-os = "Slackware64-current, Arch Linux, Linux Mint 21.1"
host-arch = "x86_64"
qemu-version = "n/a"
guest-os = "Slackware64-current, Arch Linux, Linux Mint 21.1"
guest-arch = "x86_64"
description = """Running:

```
hwclock --hctosys
```

as root, under the running VM using a UEFI bios image, I get:

```
hwclock: select() to /dev/rtc0 to wait for clock tick timed out
```

When running the same command on the same disk image but without UEFI,
that is, just using the SeaBIOS bios, everything works fine.

Running

```
hwclock --hctosys --directisa
```

works fine, too.

Running the (compiled) kernel test utility:


```
/usr/src/linux/tools/testing/selftests/rtc/rtctest.c

```


```
TAP version 13
1..8
# Starting 8 tests from 2 test cases.
#  RUN           rtc.date_read ...
# rtctest.c:49:date_read:Current RTC date/time is 10/07/2023 14:02:11.
#            OK  rtc.date_read
ok 1 rtc.date_read
#  RUN           rtc.date_read_loop ...
# rtctest.c:88:date_read_loop:Continuously reading RTC time for 30s (with 11ms breaks after every read).
# rtctest.c:115:date_read_loop:Performed 2752 RTC time reads.
#            OK  rtc.date_read_loop
ok 2 rtc.date_read_loop
#  RUN           rtc.uie_read ...
# uie_read: Test terminated by timeout
#          FAIL  rtc.uie_read
not ok 3 rtc.uie_read
#  RUN           rtc.uie_select ...
# rtctest.c:164:uie_select:Expected 0 (0) != rc (0)
# uie_select: Test terminated by assertion
#          FAIL  rtc.uie_select
not ok 4 rtc.uie_select
#  RUN           rtc.alarm_alm_set ...
# rtctest.c:202:alarm_alm_set:Alarm time now set to 14:02:52.
# rtctest.c:214:alarm_alm_set:Expected 0 (0) != rc (0)
# alarm_alm_set: Test terminated by assertion
#          FAIL  rtc.alarm_alm_set
not ok 5 rtc.alarm_alm_set
#  RUN           rtc.alarm_wkalm_set ...
# rtctest.c:258:alarm_wkalm_set:Alarm time now set to 10/07/2023 14:02:57.
# rtctest.c:268:alarm_wkalm_set:Expected 0 (0) != rc (0)
# alarm_wkalm_set: Test terminated by assertion
#          FAIL  rtc.alarm_wkalm_set
not ok 6 rtc.alarm_wkalm_set
#  RUN           rtc.alarm_alm_set_minute ...
# rtctest.c:304:alarm_alm_set_minute:Alarm time now set to 14:03:00.
# rtctest.c:316:alarm_alm_set_minute:Expected 0 (0) != rc (0)
# alarm_alm_set_minute: Test terminated by assertion
#          FAIL  rtc.alarm_alm_set_minute
not ok 7 rtc.alarm_alm_set_minute
#  RUN           rtc.alarm_wkalm_set_minute ...
# rtctest.c:360:alarm_wkalm_set_minute:Alarm time now set to 10/07/2023 14:05:00.
# rtctest.c:370:alarm_wkalm_set_minute:Expected 0 (0) != rc (0)
# alarm_wkalm_set_minute: Test terminated by assertion
#          FAIL  rtc.alarm_wkalm_set_minute
not ok 8 rtc.alarm_wkalm_set_minute
# FAILED: 2 / 8 tests passed.
# Totals: pass:2 fail:6 xfail:0 xpass:0 skip:0 error:0
#"""
reproduce = "n/a"
additional = "n/a"