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force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 4:26 am
by PLX
Hi everyone, I'll explain my problem: I've always used an external monitor and it always worked fine (so it's not a hardware problem).
For six months now, my 1920x1080 monitor blinking and fleackering and I have to plug in a smaller 1366x768 monitor.
In the meantime, I've tried everything:
- I uninstalled compiz
- I changed the hdmi cable
- I have tried all possible configurations of xorg
- I have installed several drivers for intel graphic
- I tried old versions of MX, MX kde and other distros
- I changed the resolution of the display layout
- I changed the refresh rate
But nothing seems to work.
I had an insight the other day, the 1920x1080 monitor is not working since I unplugged the laptop's internal monitor removing lid.
So I ask some super hero, is it possible to force the configuration of the screens to also have an internal monitor disabled? maybe it will solve my problem as it worked fine before
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 4:47 am
by JayM
Please run Quick System Info and post your system information whenever asking for help as per the
forum rules (
which please read.) Just run it then right-click paste in a reply, don't copy/paste. Instructions are
here if you need them. Thanks.
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 4:50 am
by PLX
Code: Select all
System:
Host: <filter> Kernel: 5.10.0-5mx-amd64 x86_64 bits: 64 compiler: N/A
parameters: BOOT_IMAGE=/boot/vmlinuz-5.10.0-5mx-amd64
root=UUID=<filter> ro quiet splash
Desktop: Xfce 4.14.3 tk: Gtk 3.24.5 info: xfce4-panel, plank wm: xfwm4
dm: LightDM 1.26.0 Distro: MX-19.4_ahs_x64 patito feo March 31 2021
base: Debian GNU/Linux 10 (buster)
Machine:
Type: Laptop System: Acer product: Extensa 2540 v: V1.18 serial: <filter>
Mobo: Acer model: BA40_SL v: V1.18 serial: <filter> UEFI [Legacy]: Insyde
v: 1.18 date: 01/02/2019
Battery:
ID-1: BAT1 charge: 42.1 Wh condition: 42.1/48.9 Wh (86%) volts: 15.3/15.2
model: COMPAL 004B384234314341 type: Li-ion serial: <filter> status: Full
CPU:
Topology: Dual Core model: Intel Core i3-6006U bits: 64 type: MT MCP
arch: Skylake family: 6 model-id: 4E (78) stepping: 3 microcode: EA
L2 cache: 3072 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
bogomips: 15999
Speed: 1046 MHz min/max: 400/2000 MHz Core speeds (MHz): 1: 500 2: 500
3: 500 4: 500
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf
mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
Type: spec_store_bypass
mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1
mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional,
IBRS_FW, STIBP: conditional, RSB filling
Type: srbds mitigation: Microcode
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: Intel Skylake GT2 [HD Graphics 520]
vendor: Acer Incorporated ALI driver: i915 v: kernel bus ID: 00:02.0
chip ID: 8086:1916
Display: x11 server: X.Org 1.20.10 driver: none compositor: compton
v: 0.1~beta2+20150922 resolution: 1366x768~60Hz
OpenGL: renderer: Mesa DRI Intel HD Graphics 520 (SKL GT2)
v: 4.6 Mesa 20.3.4 compat-v: 3.0 direct render: Yes
Audio:
Device-1: Intel Sunrise Point-LP HD Audio vendor: Acer Incorporated ALI
driver: snd_hda_intel v: kernel bus ID: 00:1f.3 chip ID: 8086:9d70
Sound Server: ALSA v: k5.10.0-5mx-amd64
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Acer Incorporated ALI driver: r8169 v: kernel port: 3000
bus ID: 01:00.0 chip ID: 10ec:8168
IF: eth0 state: down mac: <filter>
IF-ID-1: usb0 state: unknown speed: N/A duplex: N/A mac: <filter>
Drives:
Local Storage: total: 465.76 GiB used: 28.60 GiB (6.1%)
ID-1: /dev/sda vendor: Crucial model: CT500MX500SSD1 size: 465.76 GiB
block size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
serial: <filter> rev: 023 scheme: GPT
Partition:
ID-1: / raw size: 31.25 GiB size: 30.63 GiB (98.03%)
used: 10.53 GiB (34.4%) fs: ext4 dev: /dev/sda3
Sensors:
System Temperatures: cpu: 44.0 C mobo: N/A
Fan Speeds (RPM): N/A
Repos:
No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/debian-stable-updates.list
1: deb http://deb.debian.org/debian buster-updates main contrib non-free
Active apt repos in: /etc/apt/sources.list.d/debian.list
1: deb http://deb.debian.org/debian buster main contrib non-free
2: deb http://deb.debian.org/debian-security buster/updates main contrib non-free
Active apt repos in: /etc/apt/sources.list.d/estmob-sendanywhere.list
1: deb [arch=amd64,i386] http://update.send-anywhere.com/linux/debian/ stable main
Active apt repos in: /etc/apt/sources.list.d/mx.list
1: deb http://it.mxrepo.com/mx/repo/ buster main non-free
2: deb http://it.mxrepo.com/mx/repo/ buster ahs
No active apt repos in: /etc/apt/sources.list.d/various.list
Info:
Processes: 228 Uptime: 1h 28m Memory: 3.67 GiB used: 1.44 GiB (39.2%)
Init: SysVinit v: 2.93 runlevel: 5 default: 5 Compilers: gcc: 8.3.0
alt: 8 Shell: quick-system-in running in: quick-system-in inxi: 3.0.36
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 4:52 am
by Huckleberry Finn
Here's a live example:
This (famous :D ) very old laptop's monitor was broken by accident, so I removed even the lid and since a long time using it like a desktop with an old monitor with a simple VGA cable :)
When you boot (no matter you make any settings or not) monitor works. Also (though not required) I disabled LVDS1 (off) and left only VGA (and marked as primary).. Furthermore put a script in Autostart (to keep that setting) .. Consequently: directly external monitor as primary and nothing else.. no LVDS :)
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 6:46 am
by PLX
Huckleberry Finn wrote: Thu Sep 02, 2021 4:52 am
Here's a live example:
This (famous :D ) very old laptop's monitor was broken by accident, so I removed even the lid and since a long time using it like a desktop with an old monitor with a simple VGA cable :)
When you boot (no matter you make any settings or not) monitor works. Also (though not required) I disabled LVDS1 (off) and left only VGA (and marked as primary).. Furthermore put a script in Autostart (to keep that setting) .. Consequently: directly external monitor as primary and nothing else.. no LVDS :)
Thank you for your reply, I don't understand how to implement your solution ... from grub? from xrandr?
I plugged the 1920x1080 monitor to test and I have difficolt to read and write since it blinking... therefore this is my output of xrandr
Code: Select all
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
HDMI1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 1280mm x 720mm
1920x1080 60.00*+ 50.00 59.94 30.00 25.00 24.00 29.97 23.98
1920x1080i 60.00 50.00 48.04 59.94
1680x1050 59.88
1400x1050 59.95
1280x1024 60.02
1440x900 59.90
1280x960 60.00
1280x800 59.91
1280x720 60.00 50.00 59.94
1024x768 60.00
800x600 60.32
720x576 50.00
720x576i 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 60.00 59.94
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 7:49 am
by j2mcgreg
PLX wrote:
I've always used an external monitor and it always worked fine (so it's not a hardware problem).
For six months now, my 1920x1080 monitor blinking and fleackering and I have to plug in a smaller 1366x768 monitor.
Just because a device has a history of working doesn't mean that it will always work. You need to test the 1920x1080 monitor with another laptop to see if the problem recurs.
We also need the make and model of this monitor.
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 8:28 am
by Huckleberry Finn
Yep, the best is to be sure first on another machine whether it's still healthy. (Meanwhile you can also use ARandR from Menu).
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 8:30 am
by j2mcgreg
On the bottom side of your Acer laptop there will be a square black sticker (with some white space at the bottom). The white space will have the exact model make and model as written by Acer. I'll need that info.
Also, which cable type are you using to connect the 1920 x 1080 monitor -- VGA, DVI, or HDMI?
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 8:32 am
by Huckleberry Finn
Looks like HDMI:
HDMI1 connected primary 1920x1080
Re: force configuration of unplugged laptop's monitor
Posted: Thu Sep 02, 2021 8:49 am
by j2mcgreg
Huckleberry Finn wrote: Thu Sep 02, 2021 8:32 am
Looks like HDMI:
HDMI1 connected primary 1920x1080
I missed that, thanks.
Here's my thinking on this: If the 1920 x 1080 monitor tests fine with another laptop, then the cause of the flickering could be a bad cable, a loose connection on either the monitor or the laptop, or the wrong refresh rate being used for the monitor.