Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

BuddhiArch · 2020-05-25 19:54:57

I have a monitor that I don't use for a while. Recently, I wanted to use it for my laptop.

Turns out, It connects to my desktop computer, which has Ubuntu in it.

But, it won't even be noticed by xrandr, in my notebook.

The cable is a vga-vga combined with a vga-hdmi for the computer/laptop end.

 xrandr

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
   1920x1080     60.00*+  59.93    48.00
   1680x1050     59.95    59.88
   1400x1050     59.98
   1600x900      60.00    59.95    59.82
   1280x1024     60.02
   1400x900      59.96    59.88
   1280x960      60.00
   1368x768      60.00    59.88    59.85
   1280x800      59.81    59.91
   1280x720      59.86    60.00    59.74
   1024x768      60.00
   1024x576      60.00    59.90    59.82
   960x540       60.00    59.63    59.82
   800x600       60.32    56.25
   864x486       60.00    59.92    59.57
   640x480       59.94
   720x405       59.51    60.00    58.99
   640x360       59.84    59.32    60.00
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

lspci -v

 
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Mobile) (prog-if 00 [VGA controller])
        DeviceName: Onboard - Video
        Subsystem: Dell UHD Graphics 630 (Mobile)
        Flags: bus master, fast devsel, latency 0, IRQ 130
        Memory at a4000000 (64-bit, non-prefetchable) [size=16M]
        Memory at 80000000 (64-bit, prefetchable) [size=256M]
        I/O ports at 5000 [size=64]
        Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915

01:00.0 VGA compatible controller: NVIDIA Corporation GP107M [GeForce GTX 1050 3 GB Max-Q] (rev a1) (prog-if 00 [VGA controller])
        Subsystem: Dell GP107M [GeForce GTX 1050 3 GB Max-Q]
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at a2000000 (32-bit, non-prefetchable) [size=16M]
        Memory at 90000000 (64-bit, prefetchable) [size=256M]
        Memory at a0000000 (64-bit, prefetchable) [size=32M]
        I/O ports at 4000 [size=128]
        Expansion ROM at a3000000 [disabled] [size=512K]
        Capabilities: <access denied>
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia

echo /sys/class/drm/*/status

/sys/class/drm/card0-DP-1/status /sys/class/drm/card0-HDMI-A-1/status /sys/class/drm/card0-eDP-1/status

lsusb

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 1bcf:2b99 Sunplus Innovation Technology Inc. Integrated_Webcam_HD
Bus 001 Device 004: ID 0cf3:e009 Qualcomm Atheros Communications
Bus 001 Device 002: ID 045e:00cb Microsoft Corp. Basic Optical Mouse v2.0
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

uname -a

Linux buddhi 5.6.14-arch1-1 #1 SMP PREEMPT Wed, 20 May 2020 20:43:19 +0000 x86_64 GNU/Linux

Any thoughts on what I might try?

Last edited by BuddhiArch (2020-06-07 21:49:04)

Ropid · 2020-05-25 20:26:03

The monitor side of the connection is VGA and the laptop side is HDMI?

Is your connection using an "active" adapter? Active means that it has a chip in it that can convert a digital HDMI signal into an analog VGA signal. There's also "passive" VGA to HDMI adapter that only connect the wires between the VGA and HDMI sides. For a passive adapter you need a graphics card that can create an analog signal.

You can guess if an adapter is active or passive by looking at the size. An active adapter is larger. Active also needs a separate power cable that connects to for example an USB port to get power. I don't know if all active adapter need this separate power cable.

BuddhiArch · 2020-05-25 20:45:25

"The monitor side of the connection is VGA and the laptop side is HDMI?"

Yes!
I searched active vga hdmi adapter, and mine is of this form,
https://www.hdcabling.co.za/wp-content/ … tput-2.jpg

It does not have a USB port, but I guess it is active.

I don't know if it has to do with how old my monitor is.

Is arch supposed to to recognize instantaneously the hdmi cable?
In the echo /sys/class/drm/*/status, I get /sys/class/drm/card0-HDMI-A-1/status. But, in neither of the other command-outputs the HDMI is mentioned as being used.

Ropid · 2020-05-25 22:38:21

I think it should immediately show up as "connected" in the "status" file and also in "xrandr".

Do you know if the HDMI output of the laptop is wired to the Intel GPU? Maybe it's wired to the Nvidia GPU instead. What do you see when you do this:

xrandr --listproviders

There's one part that will say "output: n", with "n" being a number. If there's nothing wired to the Nvidia GPU, it will say zero there.

BuddhiArch · 2020-05-25 23:15:08

xrandr --listproviders

Providers: number : 1
Provider 0: id: 0x47 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 4 associated providers: 0 name:Intel

To that "Do you know if the HDMI output of the laptop is wired to the Intel GPU? Maybe it's wired to the Nvidia GPU instead.", I really don't know. I never used a monitor before, so this matter never showed up.

Tomorrow, I will plug my laptop to another monitor, my friend's, and I will let you know the xrandr --listproviders then, also.

Last edited by BuddhiArch (2020-05-25 23:19:03)

seth · 2020-05-26 11:39:03

I'd ask you how you configured the optimus system, but since you're not using archlinux, you probably won't know…
The hdmi outputs are very often wired to the nvidia chip, if you're using bumblebee, see https://wiki.archlinux.org/index.php/Bu … VIDIA_chip

BuddhiArch · 2020-06-02 15:56:53

I was busy these days, sorry.

I have connected my laptop to my friend's monitor, in a hdmi-hdmi connection, and his monitor instantly recognized my computer. But, I was not able to port my laptop display to it. The screen said something about power-saving display.

The outputs, in the shell, were the same as with my monitor.

Seth, I didn't have bumbleblee installed. It is my first time trying to set a configuration to use a external monitor. I got nothing on my system.

Anyhow, as we got to this tangent point, I got ask you: do you use open software? Have you written all your kernel, as well as, window manager/desktop gui you use?

NO????!

Oh, so you must be using arch-monad. Or maybe Dwm-Archinux? I3-linux? I mean, it is not *Actually* arch, right. It didn't come packed in the ISO file, therefore it is a deviation. It must be named, something else. Go back to the black-screen display, you sinner.

The accusation of which I don't use a Arch Linux system is so ludicrous and has no support in any fact. Thus, I laugh very hard at it. It must be that the ISO file I got in the Arch website, download section, was in fact a bad-taste prank on me. Idk. Maybe, in the end, it is that what you guys are saying.

Also, my system must be lying to me. When I type neofecth

-` buddhi@buddhi
.o+` -------------
`ooo/ OS: Arch Linux x86_64
`+oooo: Host: G3 3590
`+oooooo: Kernel: 5.6.15-arch1-1
-+oooooo+: Uptime: 1 hour, 4 mins
`/:-:++oooo+: Packages: 956 (pacman)
`/++++/+++++++: Shell: zsh 5.8
`/++++++++++++++: Resolution: 1920x1080
`/+++ooooooooooooo/` WM: dwm
./ooosssso++osssssso+` Theme: Arc-Gruvbox [GTK2/3]
.oossssso-````/ossssss+` Icons: Adwaita [GTK2/3]
-osssssso. :ssssssso. Terminal: st
:osssssss/ osssso+++. Terminal Font: JoyPixels
/ossssssss/ +ssssooo/- CPU: Intel i5-9300H (8) @ 4.100GHz
`/ossssso+/:- -:/+osssso+- GPU: NVIDIA GeForce GTX 1050 3 GB Max-Q
`+sso+:-` `.-/+oso: GPU: Intel UHD Graphics 630
`++:. `-/+/ Memory: 2841MiB / 7791MiB

But it is a jedi-master illusion. ff sake. Logically, the onus of proof is all yours to prove my system is no Arch. And, since it would imply that I should not be part of the forum members, I would say you should have a very good proof - not someone's quote, whoever said it.

To say,
"But at this point it's clear that you didn't install an Arch system."
is sufficient to be so?

Are you which hunters also?

I must cite Laplace on this one, as I'm a mathematician, the weight of evidence for an extraordinary claim must be proportioned to its strangeness.

seth · 2020-06-02 16:58:21

I din't use some install script I didn't write to install (and in this case: critical) parts or all of the OS.
Read the forum stickes in the NC.

Arch Linux

#1 2020-05-25 19:54:57

Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

#2 2020-05-25 20:26:03

Re: Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

#3 2020-05-25 20:45:25

Re: Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

#4 2020-05-25 22:38:21

Re: Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

#5 2020-05-25 23:15:08

Re: Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

#6 2020-05-26 11:39:03

Re: Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

#7 2020-06-02 15:56:53

Re: Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

#8 2020-06-02 16:58:21

Re: Monitor FLATRON E2041, LG won't be noticed in xrandr [ABANDONED]

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