Ubuntu Crashes with external monitors
I've been running ubuntu with gnome on my lenovo yoga 720 for about 6 months now. never had any issues until yesterday.I have been using a USB-C dongle that has 2 Displays connected to it with HDMI cables. Everything works if i start the computer without the dongle connected and then connect the dongle. I can use both screens plus the built in laptop screen BUT when i lock the computer or when it goes to sleep it will not recover from sleep. The screen stays black, no backlight and the keyboard is not working (lights vor capslock) the only thing that i can do then is hold down the power button until it goes off and restart the machine. When i then restart the machine it often starts without the wifi working. If i try to shut down the machine then, often it crashes again.
I tried installing Plasma KDE with the ssdm because i thought maybe it's a display manager issue but the problem is still there..
Anyone know what could be causing this?
14.04 multiple-monitors suspend usb-c
asked Jan 31 at 14:35
JohnJohn
1032
add a comment |
I've been running ubuntu with gnome on my lenovo yoga 720 for about 6 months now. never had any issues until yesterday.I have been using a USB-C dongle that has 2 Displays connected to it with HDMI cables. Everything works if i start the computer without the dongle connected and then connect the dongle. I can use both screens plus the built in laptop screen BUT when i lock the computer or when it goes to sleep it will not recover from sleep. The screen stays black, no backlight and the keyboard is not working (lights vor capslock) the only thing that i can do then is hold down the power button until it goes off and restart the machine. When i then restart the machine it often starts without the wifi working. If i try to shut down the machine then, often it crashes again.
I tried installing Plasma KDE with the ssdm because i thought maybe it's a display manager issue but the problem is still there..
Anyone know what could be causing this?
14.04 multiple-monitors suspend usb-c
asked Jan 31 at 14:35
JohnJohn
1032
add a comment |
I've been running ubuntu with gnome on my lenovo yoga 720 for about 6 months now. never had any issues until yesterday.I have been using a USB-C dongle that has 2 Displays connected to it with HDMI cables. Everything works if i start the computer without the dongle connected and then connect the dongle. I can use both screens plus the built in laptop screen BUT when i lock the computer or when it goes to sleep it will not recover from sleep. The screen stays black, no backlight and the keyboard is not working (lights vor capslock) the only thing that i can do then is hold down the power button until it goes off and restart the machine. When i then restart the machine it often starts without the wifi working. If i try to shut down the machine then, often it crashes again.
I tried installing Plasma KDE with the ssdm because i thought maybe it's a display manager issue but the problem is still there..
Anyone know what could be causing this?
14.04 multiple-monitors suspend usb-c
asked Jan 31 at 14:35
JohnJohn
1032
I've been running ubuntu with gnome on my lenovo yoga 720 for about 6 months now. never had any issues until yesterday.I have been using a USB-C dongle that has 2 Displays connected to it with HDMI cables. Everything works if i start the computer without the dongle connected and then connect the dongle. I can use both screens plus the built in laptop screen BUT when i lock the computer or when it goes to sleep it will not recover from sleep. The screen stays black, no backlight and the keyboard is not working (lights vor capslock) the only thing that i can do then is hold down the power button until it goes off and restart the machine. When i then restart the machine it often starts without the wifi working. If i try to shut down the machine then, often it crashes again.
I tried installing Plasma KDE with the ssdm because i thought maybe it's a display manager issue but the problem is still there..
Anyone know what could be causing this?
14.04 multiple-monitors suspend usb-c
14.04 multiple-monitors suspend usb-c
asked Jan 31 at 14:35
JohnJohn
1032
asked Jan 31 at 14:35
JohnJohn
1032
asked Jan 31 at 14:35
JohnJohn
1032
asked Jan 31 at 14:35
JohnJohn
1032
asked Jan 31 at 14:35
JohnJohn
1032
1032
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
A test kernel 4.15.0-45 is available there, which seems to fix the issue for all affected users:
https://people.canonical.com/~khfeng/lp1813663/
This test kernel fixes the problem on my Dell 9370.
Today, an official 4.15.0-45 kernel was made available on the software update channel, but it crashes at boot on my system, as does -44.
The best option is probably to stick with the -43 kernel.
Regards
answered Jan 31 at 15:12
sg2sg2
2464
add a comment |
Okay, thanks to this post i learned that the latest kernel 4.15.0-44, contains a bug in the graphics driver initialization.
I followed these steps described here:
- Started the machine and held down [SHIFT]
- From the grub menu, chose advanced options
- chose the previous kernel version and booted into this
- deleted the 4.15.0-44 kernel using ukuu
Now it looks like the problem has been resolved
answered Jan 31 at 15:07
JohnJohn
1032
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "89"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1114429%2fubuntu-crashes-with-external-monitors%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
A test kernel 4.15.0-45 is available there, which seems to fix the issue for all affected users:
https://people.canonical.com/~khfeng/lp1813663/
This test kernel fixes the problem on my Dell 9370.
Today, an official 4.15.0-45 kernel was made available on the software update channel, but it crashes at boot on my system, as does -44.
The best option is probably to stick with the -43 kernel.
Regards
answered Jan 31 at 15:12
sg2sg2
2464
add a comment |
A test kernel 4.15.0-45 is available there, which seems to fix the issue for all affected users:
https://people.canonical.com/~khfeng/lp1813663/
This test kernel fixes the problem on my Dell 9370.
Today, an official 4.15.0-45 kernel was made available on the software update channel, but it crashes at boot on my system, as does -44.
The best option is probably to stick with the -43 kernel.
Regards
answered Jan 31 at 15:12
sg2sg2
2464
add a comment |
A test kernel 4.15.0-45 is available there, which seems to fix the issue for all affected users:
https://people.canonical.com/~khfeng/lp1813663/
This test kernel fixes the problem on my Dell 9370.
Today, an official 4.15.0-45 kernel was made available on the software update channel, but it crashes at boot on my system, as does -44.
The best option is probably to stick with the -43 kernel.
Regards
answered Jan 31 at 15:12
sg2sg2
2464
A test kernel 4.15.0-45 is available there, which seems to fix the issue for all affected users:
https://people.canonical.com/~khfeng/lp1813663/
This test kernel fixes the problem on my Dell 9370.
Today, an official 4.15.0-45 kernel was made available on the software update channel, but it crashes at boot on my system, as does -44.
The best option is probably to stick with the -43 kernel.
Regards
answered Jan 31 at 15:12
sg2sg2
2464
answered Jan 31 at 15:12
sg2sg2
2464
answered Jan 31 at 15:12
sg2sg2
2464
answered Jan 31 at 15:12
sg2sg2
2464
2464
add a comment |
add a comment |
Okay, thanks to this post i learned that the latest kernel 4.15.0-44, contains a bug in the graphics driver initialization.
I followed these steps described here:
- Started the machine and held down [SHIFT]
- From the grub menu, chose advanced options
- chose the previous kernel version and booted into this
- deleted the 4.15.0-44 kernel using ukuu
Now it looks like the problem has been resolved
answered Jan 31 at 15:07
JohnJohn
1032
add a comment |
Okay, thanks to this post i learned that the latest kernel 4.15.0-44, contains a bug in the graphics driver initialization.
I followed these steps described here:
- Started the machine and held down [SHIFT]
- From the grub menu, chose advanced options
- chose the previous kernel version and booted into this
- deleted the 4.15.0-44 kernel using ukuu
Now it looks like the problem has been resolved
answered Jan 31 at 15:07
JohnJohn
1032
add a comment |
Okay, thanks to this post i learned that the latest kernel 4.15.0-44, contains a bug in the graphics driver initialization.
I followed these steps described here:
- Started the machine and held down [SHIFT]
- From the grub menu, chose advanced options
- chose the previous kernel version and booted into this
- deleted the 4.15.0-44 kernel using ukuu
Now it looks like the problem has been resolved
answered Jan 31 at 15:07
JohnJohn
1032
Okay, thanks to this post i learned that the latest kernel 4.15.0-44, contains a bug in the graphics driver initialization.
I followed these steps described here:
- Started the machine and held down [SHIFT]
- From the grub menu, chose advanced options
- chose the previous kernel version and booted into this
- deleted the 4.15.0-44 kernel using ukuu
Now it looks like the problem has been resolved
answered Jan 31 at 15:07
JohnJohn
1032
edited Jan 31 at 15:29
answered Jan 31 at 15:07
JohnJohn
1032
answered Jan 31 at 15:07
JohnJohn
1032
answered Jan 31 at 15:07
JohnJohn
1032
1032
add a comment |
add a comment |
Thanks for contributing an answer to Ask Ubuntu!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1114429%2fubuntu-crashes-with-external-monitors%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
