https://build.chromium.org/p/chromiumos/builders/x86-generic-paladin/builds/25631/steps/VMTest%20%28attempt%201%29/logs/stdio

desktopui_ScreenLocker                                          [  FAILED  ]
desktopui_ScreenLocker                                            ERROR: Timed out waiting for condition: Screen is locked.
desktopui_ScreenLocker/desktopui_ScreenLocker                   [  FAILED  ]
desktopui_ScreenLocker/desktopui_ScreenLocker                     ERROR: Timed out waiting for condition: Screen is locked.
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.864 ERROR|               log:0072| pre-test siteration sysinfo error:
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.866 ERROR|         traceback:0013| Traceback (most recent call last):
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.867 ERROR|         traceback:0013|   File "/usr/local/autotest/common_lib/log.py", line 70, in decorated_func
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.868 ERROR|         traceback:0013|     fn(*args, **dargs)
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.869 ERROR|         traceback:0013|   File "/usr/local/autotest/bin/base_sysinfo.py", line 374, in log_before_each_iteration
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.870 ERROR|         traceback:0013|     board = utils.get_board_with_frequency_and_memory()
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.871 ERROR|         traceback:0013|   File "/usr/local/autotest/bin/site_utils.py", line 864, in get_board_with_frequency_and_memory
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.872 ERROR|         traceback:0013|     frequency = int(round(get_cpu_max_frequency() * 1e-8)) * 0.1
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.873 ERROR|         traceback:0013|   File "/usr/local/autotest/bin/site_utils.py", line 788, in get_cpu_max_frequency
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.874 ERROR|         traceback:0013|     paths = _get_cpufreq_paths('cpuinfo_max_freq')
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.875 ERROR|         traceback:0013|   File "/usr/local/autotest/bin/site_utils.py", line 925, in _get_cpufreq_paths
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.876 ERROR|         traceback:0013|     paths = utils.run(cmd, verbose=False).stdout.splitlines()
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.877 ERROR|         traceback:0013|   File "/usr/local/autotest/common_lib/base_utils.py", line 893, in run
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.878 ERROR|         traceback:0013|     "Command returned non-zero exit status")
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.885 ERROR|         traceback:0013| CmdError: Command <ls /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq> failed, rc=2, Command returned non-zero exit status
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.886 ERROR|         traceback:0013| * Command:
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.887 ERROR|         traceback:0013|     ls /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.888 ERROR|         traceback:0013| Exit status: 2
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.888 ERROR|         traceback:0013| Duration: 0.010064125061
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.889 ERROR|         traceback:0013|
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.890 ERROR|         traceback:0013| stderr:
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:03:53.891 ERROR|         traceback:0013| ls: cannot access /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq: No such file or directory
desktopui_ScreenLocker/desktopui_ScreenLocker                     03/13 16:04:45.570 ERROR|        site_utils:0241| Timed out waiting for condition: Screen is locked.

Maybe related to  issue 589885  or issue 452599.