Unable to startup when external monitor is plugged in, ubuntu18.04, kernel 4.15.0-44-generic
I have an external monitor(Dell P2210) plugged into my Dell Latitude E5570 laptop via VGA. It runs ubuntu 18.04 for a few months without a problem. The recent kernel update(4.15-0-43 to 4.15-0-44 I believe) seems to break the external monitor connection.
The problem is like this:
At a fresh startup, the laptop built-in screen turns black after the grub menu, external monitor didn't detect signal & remains black.
Switched back to kernel 4.15-0-43, Everything works as normal as the past 2 years. I upgraded from ubuntu16.04 to 18.04 a few months back but that didn't cause any issue.
In the latest kernel 4.15-0-44, I am able to get the external working by plugging it in after the laptop is completely booted up. but after the laptop gets into sleep mode(suspend), I'm unable to wake it up, the built-in screen and external monitor all remain black.
Now I'm pretty sure the issue lies in the latest kernel update, how do I further narrow down & fix the issue in the latest kernel?
18.04 kernel multiple-monitors
asked Jan 31 at 0:17
TC ZhangTC Zhang
1264
add a comment |
I have an external monitor(Dell P2210) plugged into my Dell Latitude E5570 laptop via VGA. It runs ubuntu 18.04 for a few months without a problem. The recent kernel update(4.15-0-43 to 4.15-0-44 I believe) seems to break the external monitor connection.
The problem is like this:
At a fresh startup, the laptop built-in screen turns black after the grub menu, external monitor didn't detect signal & remains black.
Switched back to kernel 4.15-0-43, Everything works as normal as the past 2 years. I upgraded from ubuntu16.04 to 18.04 a few months back but that didn't cause any issue.
In the latest kernel 4.15-0-44, I am able to get the external working by plugging it in after the laptop is completely booted up. but after the laptop gets into sleep mode(suspend), I'm unable to wake it up, the built-in screen and external monitor all remain black.
Now I'm pretty sure the issue lies in the latest kernel update, how do I further narrow down & fix the issue in the latest kernel?
18.04 kernel multiple-monitors
asked Jan 31 at 0:17
TC ZhangTC Zhang
1264
have you tryed manually upgrading the kernal askubuntu.com/questions/119080/… and look for @WinEunuuchs2Unix
– Budget Tech
Jan 31 at 5:09
Can confirm the issue with4.15.0-44-generickernel. As a workaround, you can dock your laptop after logging in.
– Dorian Marchal
Jan 31 at 8:20
I'm having the same issue but kernel is4.15.0-45-generic-- I can dock after logging in but it also happens when my computer sleeps.
– Amanda
Jan 31 at 17:41
Hi, all, This bug seems to be noticed by the ubuntu security team usn.ubuntu.com/3871-2 and has been fixed in linux-image-4.15.0-45-generic - 4.15.0-45.48. I can't update to 4.15.0-45.48 for now so I'm unable to confirm the fix.
– TC Zhang
Feb 6 at 0:12
fixed by upgrading to 4.15.0-45
– TC Zhang
Feb 7 at 0:32
add a comment |
I have an external monitor(Dell P2210) plugged into my Dell Latitude E5570 laptop via VGA. It runs ubuntu 18.04 for a few months without a problem. The recent kernel update(4.15-0-43 to 4.15-0-44 I believe) seems to break the external monitor connection.
The problem is like this:
At a fresh startup, the laptop built-in screen turns black after the grub menu, external monitor didn't detect signal & remains black.
Switched back to kernel 4.15-0-43, Everything works as normal as the past 2 years. I upgraded from ubuntu16.04 to 18.04 a few months back but that didn't cause any issue.
In the latest kernel 4.15-0-44, I am able to get the external working by plugging it in after the laptop is completely booted up. but after the laptop gets into sleep mode(suspend), I'm unable to wake it up, the built-in screen and external monitor all remain black.
Now I'm pretty sure the issue lies in the latest kernel update, how do I further narrow down & fix the issue in the latest kernel?
18.04 kernel multiple-monitors
asked Jan 31 at 0:17
TC ZhangTC Zhang
1264
I have an external monitor(Dell P2210) plugged into my Dell Latitude E5570 laptop via VGA. It runs ubuntu 18.04 for a few months without a problem. The recent kernel update(4.15-0-43 to 4.15-0-44 I believe) seems to break the external monitor connection.
The problem is like this:
At a fresh startup, the laptop built-in screen turns black after the grub menu, external monitor didn't detect signal & remains black.
Switched back to kernel 4.15-0-43, Everything works as normal as the past 2 years. I upgraded from ubuntu16.04 to 18.04 a few months back but that didn't cause any issue.
In the latest kernel 4.15-0-44, I am able to get the external working by plugging it in after the laptop is completely booted up. but after the laptop gets into sleep mode(suspend), I'm unable to wake it up, the built-in screen and external monitor all remain black.
Now I'm pretty sure the issue lies in the latest kernel update, how do I further narrow down & fix the issue in the latest kernel?
18.04 kernel multiple-monitors
18.04 kernel multiple-monitors
asked Jan 31 at 0:17
TC ZhangTC Zhang
1264
asked Jan 31 at 0:17
TC ZhangTC Zhang
1264
asked Jan 31 at 0:17
TC ZhangTC Zhang
1264
asked Jan 31 at 0:17
TC ZhangTC Zhang
1264
asked Jan 31 at 0:17
TC ZhangTC Zhang
1264
1264
have you tryed manually upgrading the kernal askubuntu.com/questions/119080/… and look for @WinEunuuchs2Unix
– Budget Tech
Jan 31 at 5:09
Can confirm the issue with4.15.0-44-generickernel. As a workaround, you can dock your laptop after logging in.
– Dorian Marchal
Jan 31 at 8:20
I'm having the same issue but kernel is4.15.0-45-generic-- I can dock after logging in but it also happens when my computer sleeps.
– Amanda
Jan 31 at 17:41
Hi, all, This bug seems to be noticed by the ubuntu security team usn.ubuntu.com/3871-2 and has been fixed in linux-image-4.15.0-45-generic - 4.15.0-45.48. I can't update to 4.15.0-45.48 for now so I'm unable to confirm the fix.
– TC Zhang
Feb 6 at 0:12
fixed by upgrading to 4.15.0-45
– TC Zhang
Feb 7 at 0:32
add a comment |
have you tryed manually upgrading the kernal askubuntu.com/questions/119080/… and look for @WinEunuuchs2Unix
– Budget Tech
Jan 31 at 5:09
Can confirm the issue with4.15.0-44-generickernel. As a workaround, you can dock your laptop after logging in.
– Dorian Marchal
Jan 31 at 8:20
I'm having the same issue but kernel is4.15.0-45-generic-- I can dock after logging in but it also happens when my computer sleeps.
– Amanda
Jan 31 at 17:41
Hi, all, This bug seems to be noticed by the ubuntu security team usn.ubuntu.com/3871-2 and has been fixed in linux-image-4.15.0-45-generic - 4.15.0-45.48. I can't update to 4.15.0-45.48 for now so I'm unable to confirm the fix.
– TC Zhang
Feb 6 at 0:12
fixed by upgrading to 4.15.0-45
– TC Zhang
Feb 7 at 0:32
have you tryed manually upgrading the kernal askubuntu.com/questions/119080/… and look for @WinEunuuchs2Unix
– Budget Tech
Jan 31 at 5:09
have you tryed manually upgrading the kernal askubuntu.com/questions/119080/… and look for @WinEunuuchs2Unix
– Budget Tech
Jan 31 at 5:09
Can confirm the issue with
4.15.0-44-generic kernel. As a workaround, you can dock your laptop after logging in.– Dorian Marchal
Jan 31 at 8:20
Can confirm the issue with
4.15.0-44-generic kernel. As a workaround, you can dock your laptop after logging in.– Dorian Marchal
Jan 31 at 8:20
I'm having the same issue but kernel is
4.15.0-45-generic -- I can dock after logging in but it also happens when my computer sleeps.– Amanda
Jan 31 at 17:41
I'm having the same issue but kernel is
4.15.0-45-generic -- I can dock after logging in but it also happens when my computer sleeps.– Amanda
Jan 31 at 17:41
Hi, all, This bug seems to be noticed by the ubuntu security team usn.ubuntu.com/3871-2 and has been fixed in linux-image-4.15.0-45-generic - 4.15.0-45.48. I can't update to 4.15.0-45.48 for now so I'm unable to confirm the fix.
– TC Zhang
Feb 6 at 0:12
Hi, all, This bug seems to be noticed by the ubuntu security team usn.ubuntu.com/3871-2 and has been fixed in linux-image-4.15.0-45-generic - 4.15.0-45.48. I can't update to 4.15.0-45.48 for now so I'm unable to confirm the fix.
– TC Zhang
Feb 6 at 0:12
fixed by upgrading to 4.15.0-45
– TC Zhang
Feb 7 at 0:32
fixed by upgrading to 4.15.0-45
– TC Zhang
Feb 7 at 0:32
add a comment |
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have you tryed manually upgrading the kernal askubuntu.com/questions/119080/… and look for @WinEunuuchs2Unix
– Budget Tech
Jan 31 at 5:09
Can confirm the issue with
4.15.0-44-generickernel. As a workaround, you can dock your laptop after logging in.– Dorian Marchal
Jan 31 at 8:20
I'm having the same issue but kernel is
4.15.0-45-generic-- I can dock after logging in but it also happens when my computer sleeps.– Amanda
Jan 31 at 17:41
Hi, all, This bug seems to be noticed by the ubuntu security team usn.ubuntu.com/3871-2 and has been fixed in linux-image-4.15.0-45-generic - 4.15.0-45.48. I can't update to 4.15.0-45.48 for now so I'm unable to confirm the fix.
– TC Zhang
Feb 6 at 0:12
fixed by upgrading to 4.15.0-45
– TC Zhang
Feb 7 at 0:32