** Tags added: cscc
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Title:
Kernel crash when booting laptop with hdmi monitor connected
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Tried following kernel versions with system upgraded w/ or w/o nvidia-
driver-390 (version 390.116-0ubuntu0.18.04.1) installed. Booting with
HDMI cable connected doesn't have any problem for X, and I got dual
screen working as expected.
* 4.15.0-1035-oem
* 4.15.0-20-generic
* 4.15.0-36-generic
* 4
Kai-Heng Feng: I did some more testing and I don't see the problem in the
cosmic proposed kernel 4.18.0-9.10.
1) the live CD appeared to boot fine, but I didn't totally trust the test
procedure.
2) I installed cosmic 4.18.0-9.10 from
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/u
Kai-Heng Feng: I am working on testing with cosmic. I think I need some
time though. I can't figure out how to change the grub menu in the usb
live image. I need to add apci_osi='!Windows 2015" and I think my typing
screws with the startup timing. Do you know of a way to change the grub
config on t
You can download it here: http://cdimages.ubuntu.com/daily-live/current/
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Title:
Kernel crash when booting laptop with hdmi monitor connected
To
I'll work on this when I find some time.
In the meantime, can you try Cosmic live USB/CD? It uses 4.18 kernel.
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Kai-Heng Feng (kaihengfeng)
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Ok, that patch is for LP: #1308685.
Not sure if this patch is still necessary, so subscribing Andy...
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Title:
Kernel crash when booting laptop w
** Tags added: latest-bios-1.28
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Title:
Kernel crash when booting laptop with hdmi monitor connected
To manage notifications about this bug go t
Kai-Heng Feng,
Yes it does. I just confirmed the issue is still present in
4.15.0-34-generic. I also upgraded my bios to the latest 1.2.8. See
attached syslog which contains backtrace. I don't notice any difference.
I was also able to find another workaround by removing "splash" from the
kernel c
Kai-Heng Feng,
I also found the problem commit but I'm not sure how to properly tag
this bug report.
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Title:
Kernel crash when booting laptop wi
Does this issue still happens on latest Ubuntu kernel?
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Title:
Kernel crash when booting laptop with hdmi monitor connected
To manage notificati
I also built ubuntu-bionic: Ubuntu-4.15.0-23.25 reverting
d8a077b6271ef3d7620f0e95d4a343ec1661fe5d (which is the same commit in
the ubuntu-bionic repo).
I see that there is a brief text terminal between grub and the ubuntu
loading screen, but at least it seems to boot reliably with a second
monito
bisect result: lp:~ubuntu-kernel/ubuntu/+source/linux/+git/unstable
shows this commit.
I built using the mainline config-4.15.0-041500rc2-generic file and
accepted default options. I also had to apply
ff6fa2d396b0476988c749664f600b1e177bcf9b in order to get the neighboring
commits to build.
it do
Using the lp:~ubuntu-kernel/ubuntu/+source/linux/+git/unstable
repository, I was able to narrow the issue down to between two tags:
Ubuntu-4.15.0-0 (issue present) and Ubuntu-4.14.0-17.20 (ubuntu-bionic,
no issue present). I also tried Ubuntu-4.14.0-11.13 from the unstable
branch which doesn't have
Timo Aaltonen:
I had tested rc7 I think for 4.17. I'm attaching the dmesg from startup
using 4.17.0 with drm.debug=0x4 too (I just tried 4.17.0).
I'll start on the unstable repo, It'll take a few days probably as I
haven't figured out how to do a really incremental build. Please let me
know if yo
the diff between the working an non-working case is this on the working one:
May 31 11:37:08 exposure kernel: [drm:intel_dp_dual_mode_set_tmds_output
[i915]] Enabling DP dual mode adaptor TMDS output
but even the crashing one seems to detect that correctly
May 31 11:59:32 exposure kernel: [drm:dr
note that d4814b5f3812ca7 is not the same as building off 'Ubuntu-4.15.0-1.2'
-tag, which you can find here:
lp:~ubuntu-kernel/ubuntu/+source/linux/+git/unstable
d4814b5f3812ca7 is actually based on v4.15 with the packaging and SAUCE
from -1.2 added on top.
There is no diff to drm/i915 in the di
I got some help from #ubuntu-kernel Thadeu Cascardo suggested I try
drm.debug=0x4
The crash seems to happen every time when the laptop has been off for a
while, but sometimes it doesn't if I power it down then bootup. So I
captured two logs attached, one where the system booted normally, and
one w
** Attachment added: "drm.debug.0x4_nocrash.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1768139/+attachment/5147056/+files/drm.debug.0x4_nocrash.txt
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** Tags removed: needs-reverse-bisect
** Tags added: needs-bisect
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Title:
Kernel crash when booting laptop with hdmi monitor connected
To manage
Joshua R. Poulson:
I will try reverting that patch, but I see the same behavior in
Ubuntu-4.15.0-9.10 which I believe is before that commit.
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Titl
Have you tried it with this patch backed out?
http://kernel.ubuntu.com/git/ubuntu/ubuntu-
bionic.git/commit/drivers/gpu?id=3fd668d6f93978f0b67264ab6a99d5f801cbd9b0
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Sandy Patterson:
>"Let me know if I can do any more testing."
Please reach out to the Ubuntu Kernel team via
https://wiki.ubuntu.com/KernelTeam for testing build requests that
revert the offending commit(s)/apply the fix commit(s).
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Few final comments on the work I did to narrow this:
* Issue is present in ubuntu but not in mainline (4.15.17 I think is closest? I
have tried a bunch though 4.15.0, 4.15.18, 4.15.16...)
* I compiled mainline kernel 4.15.17 from linux-stable with ubuntu config from
/boot/config-4.15.0-22-generi
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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Title:
Kernel crash when booting laptop with hdmi monitor connected
To manag
** Description changed:
When I boot a Dell Inspiron 7559 with an external monitor connected to
the hdmi port, it usually shows only a blank screen after grub and I
have to hard power off the laptop. The issue is present when the bios
and grub are in mirror mode to both screens. I can see t
Christopher Penalver:
1) I removed the kernel parameters and I am getting the same behavior.
I'll leave it off, I had to set it to boot the live cd. There is a bug
report somewhere where I found this workaround. It seems to work now,
perhaps this acpi problem has been fixed.
2) I'd say probably 9
Sandy Patterson, a couple follow ups:
1) Regarding kernel parameter acpi_osi=!Windows 2015 could you please
advise why you need to use it, if at all? If you don't, you will want to
remove it during your bisect tests to mimic a default install.
2) Regarding your Bug Description change, you change
** Description changed:
When I boot a Dell Inspiron 7559 with an external monitor connected to
- the hdmi port, it consistently shows only a blank screen after grub and
- I have to hard power off the laptop. I can see the following stack trace
- in journalctl:
+ the hdmi port, it usually shows o
Christopher Penalver:
>"To clarify, you were able to test 4.15.0-17.18 successfully?"
Yes. I was able to test 4.15.0-17.18 which exhibited the issue.
>"To advise, you are performing a reverse bisect. Hence, you are looking
for the next most recent kernel after 4.15.0-9-generic 4.15.0-9.10 where
Sandy Patterson:
>"I figured out the modules thing. It seems older kernels don't have
separate debs for the modules. I needed the extra package regardless (if
both linux-modules-extra and linux-image-extra were missing I don't
think the test is right)."
To clarify, you were able to test 4.15.0-17
Christopher Penalver:
I figured out the modules thing. It seems older kernels don't have
separate debs for the modules. I needed the extra package regardless (if
both linux-modules-extra and linux-image-extra were missing I don't
think the test is right).
I went back further:
4.14.0-16-generic_4.
Sandy Patterson:
Regarding 4.15.0-17.18 not having linux-modules-* here are a couple
options:
1) Test the next oldest version until you can do a proper test.
2) Contact the Ubuntu Kernel Team via https://wiki.ubuntu.com/KernelTeam
and inquire if the linux-modules-* can be provided for that versi
Small update. I've gone back to try and see what I can learn from
installing pre-built kernels:
1) for some reason when I reboot sometimes I see the grub screen in
mirror mode and sometimes one monitor is blank. This issue happens
whenever grub is mirrored between both monitors. It is always mirro
** Description changed:
When I boot a Dell Inspiron 7559 with an external monitor connected to
- the hdmi port I get a crash on bootup. I can see the following stack
- trace in journalctl:
-
+ the hdmi port, it consistently shows only a blank screen after grub and
+ I have to hard power off the
re building. I think i've gotten it building. "time fakeroot
debian/rules binary" takes a long time, but seems to be working
re your questions:
1) it's consistent. only when booting right after grub I get a kernel crash.
Every time when my monitor is connected via the HDMI connector on my laptop.
Sandy Patterson a few follow up questions:
1) Does the OS crash consistently if you boot up with the external
monitor plugged in, or does it only happen sometimes? If sometimes, how
often specifically?
2) Does the OS crash if you connect the external monitor after fully
booting up and logging in?
I also found the mapping between ubuntu versions and mainline versions
and so tried mainline linux-image-4.15.17-041517-generic which also did
not exhibit the issue.
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Christopher Penalver:
> Without providing which kernels you tested nobody may understand why this
> happened.
I hadn't finished my testing. But i did test some of the mainline kernels
below. I'm not certain that I installed them correctly. I was hoping to get the
ubuntu kernels to build to see
Sandy Patterson:
>"penalvch, I'm having a bit of trouble. Is there instructions on
building the ubuntu kernel from git?"
Yes, the instructions previously provided.
>"I wasn't able to find a mainline kernel which fails."
Without providing which kernels you tested nobody may understand why
this h
penalvch, I'm having a bit of trouble. Is there instructions on building
the ubuntu kernel from git? I wasn't able to find a mainline kernel
which fails.
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Sandy Patterson, the next step is to fully reverse commit bisect from
kernel 4.15 to 4.17-rc7 in order to identify the last bad commit,
followed immediately by the first good one. Once this good commit has
been identified, it may be reviewed for backporting. Could you please do
this following https
1) This started when I did a clean install of 18.04. I was running 17.10
on the same hardware with the same kernel parameters (the
"acpi_osi=!Windows 2015"). I'm afraid I can't tell you which kernel
exactly, but I keep things up to date. I upgraded a few days before this
report. I think it was rele
Sandy Patterson, please address all of the following:
1. Is this something that started to happen after an update? If so,
which and when precisely?
2. In order to allow additional upstream mainline kernel developers to examine
the issue, at your earliest convenience, could you please test the la
I also confirmed the issue still persists as I captured the apport data.
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Title:
Kernel crash when booting laptop with hdmi monitor connected
To
apport information
** Tags added: apport-collected
** Description changed:
When I boot a Dell Inspiron 7559 with an external monitor connected to
the hdmi port I get a crash on bootup. I can see the following stack
trace in journalctl:
syslog contains:
kernel: Missing switch cas
** Package changed: linux-signed (Ubuntu) => linux (Ubuntu)
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Title:
Kernel crash when booting laptop with hdmi monitor connected
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syslog stack trace
** Attachment added: "syslog_excerpt.txt"
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1768139/+attachment/5131424/+files/syslog_excerpt.txt
** Description changed:
When I boot a Dell Inspiron 7559 with an external monitor connected to
the hdmi port I ge
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