Many thanks for your help!
Here you are <lspci -k> output:
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory
Controller Hub (rev 07)
Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Memory
Controller Hub
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Integrated
Graphics Controller
Kernel driver in use: i915
Kernel modules: i915
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Integrated
Graphics Controller
00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #4 (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) USB UHCI
Controller
Kernel driver in use: uhci_hcd
00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #5 (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) USB UHCI
Controller
Kernel driver in use: uhci_hcd
00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #6 (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) USB UHCI
Controller
Kernel driver in use: uhci_hcd
00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #2 (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) USB2 EHCI
Controller
Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio
Controller (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) HD Audio
Controller
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1
(rev 03)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2
(rev 03)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3
(rev 03)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5
(rev 03)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6
(rev 03)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #1 (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) USB UHCI
Controller
Kernel driver in use: uhci_hcd
00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #2 (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) USB UHCI
Controller
Kernel driver in use: uhci_hcd
00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #3 (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) USB UHCI
Controller
Kernel driver in use: uhci_hcd
00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #1 (rev 03)
Subsystem: Hewlett-Packard Company 82801I (ICH9 Family) USB2 EHCI
Controller
Kernel driver in use: ehci-pci
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)
Subsystem: Hewlett-Packard Company ICH9M LPC Interface Controller
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port
SATA Controller [IDE mode] (rev 03)
Subsystem: Hewlett-Packard Company 82801IBM/IEM (ICH9M/ICH9M-E) 2 port
SATA Controller [IDE mode]
Kernel driver in use: ata_piix
Kernel modules: pata_acpi
00:1f.5 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port
SATA Controller [IDE mode] (rev 03)
Subsystem: Hewlett-Packard Company 82801IBM/IEM (ICH9M/ICH9M-E) 2 port
SATA Controller [IDE mode]
Kernel driver in use: ata_piix
Kernel modules: pata_acpi
02:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh]
Network Connection
Subsystem: Intel Corporation WiFi Link 5100 AGN
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
85:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8042 PCI-E Fast
Ethernet Controller
Subsystem: Hewlett-Packard Company 88E8042 PCI-E Fast Ethernet
Controller
Kernel driver in use: sky2
Kernel modules: sky2
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to mutter in Ubuntu.
https://bugs.launchpad.net/bugs/1796528
Title:
Problem with dual monitors
Status in gnome-shell package in Ubuntu:
Incomplete
Status in mutter package in Ubuntu:
Incomplete
Status in xorg-server package in Ubuntu:
Incomplete
Bug description:
Machine: HP 6735s with Mobile Intel® GM45 Express Chipset
O.S. 64bit Ubuntu 18.04.1 LTS
Gnome 3.28.2
I usually used an external monitor in Ubuntu 16.04 without any problem but
I've formatted and maked a clean install of Ubuntu 18.04. It works ok when
integrated monitor or external monitor are alone. If try to extend desktop to
both monitors, then integrated display go black and only a blinking mouse arrow
appears on it. External display is in closed loop trying to start, powering
on/off the backlight, like system were trying to send image but crashing. When
moving the mouse, arrow didn't go out of the integrated monitor. When I
disconnect the external monitor, then image come back to the integrated monitor
after some time. I've tried to edit "/etc/gdm3/custom.conf" to disable wayland
and use xorg, but it's still the same. I don't know where the problem came
from... gnome, intel drivers, graphic server...
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
DisplayManager: gdm3
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-08-07 (61 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
Package: xorg-server
PackageArchitecture: amd64
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=es_ES.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18
Tags: bionic
Uname: Linux 4.15.0-34-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1796528/+subscriptions
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