Bug 1476885 - power off does not work on iMac
power off does not work on iMac
Status: NEW
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
x86_64 Linux
unspecified Severity low
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Assigned To: Kernel Maintainer List
Fedora Extras Quality Assurance
Depends On:
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Reported: 2017-07-31 13:34 EDT by Rod Cerkoney
Modified: 2017-08-01 18:12 EDT (History)
8 users (show)

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Description Rod Cerkoney 2017-07-31 13:34:05 EDT
Description of problem:

Selecting "power off" from GUI environment causes machine to restart after several minutes.

Version-Release number of selected component (if applicable):

[rc@localhost ~]$ uname -a
Linux localhost.localdomain 4.11.11-300.fc26.x86_64 #1 SMP Mon Jul 17 16:32:11 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

How reproducible:
100% of the time following steps below.

Steps to Reproduce:
1.  Click "power button" icon in GNOME GUI

2. Select "Power Off" in resulting dialog box.

Actual results:

The machine starts the shutdown process. The last entry on the screen trace says, "reached target reboot: Poweroff". a minute or two later the screen goes dark, and a few more seconds later the boot screen appears prompting for kernel to load.

Same thing happens using poweroff -f

Expected results:

Machine shuts down and powers off

Additional info:

HW environment: Late model iMac

[rc@localhost ~]$ lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              4
On-line CPU(s) list: 0-3
Thread(s) per core:  1
Core(s) per socket:  4
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               71
Model name:          Intel(R) Core(TM) i5-5675R CPU @ 3.10GHz
Stepping:            1
CPU MHz:             1980.261
CPU max MHz:         3600.0000
CPU min MHz:         800.0000
BogoMIPS:            6185.73
Virtualization:      VT-x
L1d cache:           32K
L1i cache:           32K
L2 cache:            256K
L3 cache:            4096K
L4 cache:            131072K

I've seen other bug reports with similar problems on non-Apple hardware, #1365352 comes very close to what I am seeing. But that was on F24 several months ago.


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