Yes, I'm using Intel graphics, there's no Nvidia in this laptop
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https://bugs.launchpad.net/bugs/2067143
Title:
‘no signal’ after monitor sleep or monitor turned off
To manage notifica
Sounds similar to bug 2066129 and bug 2066307, but currently we're
blaming those on the Nvidia driver. And you seem to be using Intel
graphics.
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Ti
I have also tried your other suggestion, lowering the resolution to
1920x1080, and you're right - then the problem is gone. So I'll try with
a different display cable (I'm now using the one that came with the
monitor).
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Attached is the journal file from around the time when it happened
** Attachment added: "journalX1.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2067143/+attachment/5784052/+files/journalX1.txt
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Please also provide a log from as soon as the bug occurs:
journalctl -b0 > journal.txt
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https://bugs.launchpad.net/bugs/2067143
Title:
‘no signal’ after monitor sleep or monitor turn
Please try setting the external monitor to a lower resolution like
1920x1080. If the bug then stops happening it would suggest a higher
quality display cable is needed.
** Tags added: multimonitor suspend-resume
** Package changed: xorg (Ubuntu) => linux (Ubuntu)
** Also affects: mutter (Ubuntu
I have the same problem: whenever my laptop sleeps two external monitors
flicker/blink for a while and then show "no signal" message. Only one
solution that sometimes helps is to open laptop lid or
disconnect/connect monitors.
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