4.15.0-12 had the same problem, please see #1756455 [1] (which is
absolutely the same as this one).
I have also tried all mainline kernels from 4.15.3 up to 4.17rc1, and
here are the results:
* all mainline kernels in branch 4.15 do NOT have any issues
* starting with mainline 4.16.0 it is
Generally 4.16.0-041600.201804012230 seems to have the same problem.
"Generally" means that 4.16 behaviour seems to be even more random -
sometimes it powers off correctly, and sometimes it does not power off
even on AC (and reboots). Unfortunately, I could not figure out the
exact rules and
** Tags added: kernel-bug-exists-upstream
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https://bugs.launchpad.net/bugs/1760110
Title:
Kernel 4.15.0-13.14 reboots instead of powering off (when on battery)
on HP Spectre x360
The system was originally installed using a snapshot ISO which had
kernel 4.15.0-10. And everything was working great, system was powering
off as expected. I still keep this kernel installed and actually use it
daily. So everything was working fine with 4.15.0-10.11.
I have not tried the 4.16
Public bug reported:
This might be a duplicate of #1756455
HP Spectre x360 13", model 13-ae004na, secure boot on, latest BIOS
F.15A, Ubuntu is the only system on disk.
When using kernel 4.15.0-13 the system does not power off but instead
reboots. Both halt -p from the command line and menu
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
Kernel 4.15.0-12 reboots instead of turning off on HP Spectre x360
apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088499/+files/UdevDb.txt
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Title:
apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088496/+files/ProcInterrupts.txt
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apport information
** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088498/+files/RfKill.txt
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Title:
apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088495/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088497/+files/ProcModules.txt
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apport information
** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088491/+files/IwConfig.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088490/+files/CurrentDmesg.txt
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apport information
** Attachment added: "JournalErrors.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088492/+files/JournalErrors.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088494/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088493/+files/Lspci.txt
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Title:
apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1756455/+attachment/5088489/+files/CRDA.txt
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Title:
apport information
** Tags added: apport-collected bionic
** Description changed:
Ubuntu 18.04, installed from beta 1 ISO + all updates to date
HP Spectre x360 13", model 13-ae004na, secure boot on, latest BIOS
F.15A, Ubuntu is the only system on disk.
When using kernel 4.15.0-12
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Title:
Kernel 4.15.0-12 reboots instead of turning off on HP
OK, as expected linux-firmware upgrade seems to be unrelated. After
doing more than two dozen shutdowns with each kernel (4.15.0-10 and
4.15.0-12) I see the following pattern:
* secure boot enabled or disabled makes no difference
* kernel 4.15.0-10 correctly powers off system (halt -p) every
Recent linux-firmware update (1.172 -> 1.173) somehow resolved this
issue, although I cannot spot anything relevant in the changelog.
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Title:
Public bug reported:
Ubuntu 18.04, installed from beta 1 ISO + all updates to date
HP Spectre x360 13", model 13-ae004na, secure boot on, latest BIOS
F.15A, Ubuntu is the only system on disk.
When using kernel 4.15.0-12 the system does not power off but instead
reboots. Both halt -p from the
Worked through the day without a crash, the same today. Have not seen
any artifacts during login or any other side effects. Thus,
xfce4-session_4.10.0-2ubuntu1.1 works for me.
HW: Intel i5 480M
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xfce4-session_4.10.0-2ubuntu1.1 appears to do the trick. Before
installing the bugfix I was unable to perform ANY session-related
operation (save, clear, even log out). How all of them working. Still
testing the long run...
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As yet another person affected with this bug, I would like to add that
the '--noudevsync workaround' does not really remove the timeout, it
drastically decreases it. On my system (Acer 4820TG) the timeout of
16..25 seconds still exists (although not the original 80 seconds I've
seen with
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