Hi! I have updates on this: ¡IT WAS A CABLE PROBLEM!
Same cable and same monitor that works OK with my HP OMEN 15 doesn't
work with my HP 440 G7... I tried with a different cable (a shorter one)
and everything looks normal.
Please, mark this as closed.
Thanks everyone for the help,
HAPPY 2021.
HI! I had tested with Fedora 33... same results...
Happy Xmass
** Summary changed:
- Samsung SMBX2250 monitor detected but black screen (has a preferred mode but
no current mode set)
+ Intel UHD Graphics: external monitor detected but black screen (has a
preferred mode but no current mode
** Attachment added: "Xrandr output with Plasma"
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1907870/+attachment/580/+files/plasmaxrandr.txt
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I tried with Plasma desktop... Same result.
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https://bugs.launchpad.net/bugs/1907870
Title:
HDMI monitor detected but black screen (has a preferred mode but no
current
I read about a bug similar to this affecting mutter 3.34,but said that
they can see the poi ter in the second screen. In this case my monitor
falls in no-signal after a few seconds of trying to get the correct
mode.
(pls, sorry for my English)
Regards
JM
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Just in case... same cable and same external monitor works perfect on my
HP Omen 15 with Nvidia GTX1060 and Ubuntu 20.04
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Title:
** Attachment added: "grep . /sys/class/drm/*/modes > drmmodes.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907870/+attachment/5444004/+files/drmmodes.txt
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** Attachment added: "Xrandr with Wayland output"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907870/+attachment/5444003/+files/xrandrv.txt
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** Attachment added: "Xrandr with Xorg output"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907870/+attachment/5444002/+files/xrandrv_xorg.txt
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Using Wayland didn't solve the problem, even worst... it makes the
desktop more unstable.
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Title:
Secondary screen detected but
apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443206/+files/ProcModules.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443205/+files/ProcInterrupts.txt
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apport information
** Attachment added: "Lspci-vt.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443198/+files/Lspci-vt.txt
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apport information
** Attachment added: "Lsusb-t.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443199/+files/Lsusb-t.txt
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apport information
** Attachment added: "xdpyinfo.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443212/+files/xdpyinfo.txt
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apport information
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443211/+files/acpidump.txt
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apport information
** Attachment added: "Xrandr.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443210/+files/Xrandr.txt
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apport information
** Attachment added: "XorgLogOld.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443209/+files/XorgLogOld.txt
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apport information
** Attachment added: "XorgLog.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443208/+files/XorgLog.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443207/+files/UdevDb.txt
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apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443204/+files/ProcEnviron.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443203/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "MonitorsUser.xml.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443201/+files/MonitorsUser.xml.txt
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apport information
** Attachment added: "Lsusb-v.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443200/+files/Lsusb-v.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443202/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443197/+files/Lspci.txt
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Title:
apport information
** Attachment added: "DpkgLog.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443196/+files/DpkgLog.txt
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apport information
** Attachment added: "Dependencies.txt"
https://bugs.launchpad.net/bugs/1907870/+attachment/5443195/+files/Dependencies.txt
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apport information
** Tags added: apport-collected groovy ubuntu
** Description changed:
Hi! I have an HP ProBook 440 G7 with i7-10510U and INTEL UHD GRAPHICS.
The problem:
When i connect to my external monitor (a Samsung BX2250) via HDMI, the
screen is detected (i can see it in
Public bug reported:
Hi! I have an HP ProBook 440 G7 with i7-10510U and INTEL UHD GRAPHICS.
The problem:
When i connect to my external monitor (a Samsung BX2250) via HDMI, the
screen is detected (i can see it in display settings) but the external
monitor remains black. Seams like a bad
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