Questions tagged [edid]

Extended Display Identification Data is a standardized means for a display to communicate its capabilities to a source device.

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Lower screen resolution 1600x1200 does not fill the area of the Dasung HD-F e-ink monitor in Fedora 34

I bought the Dasung HD-F 2019 e-ink monitor. The default screen resolution is 2200x1650 @ 40. Dasung also supports 1600x1200 @ 60 and I would like to use that. Unfortunately, the screen does not fill ...
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Remove detected resolutions

There are many articles about how to add undetected resolutions. My problem is the opposite: gnome-control-center shows many resolutions I won't ever use. Here is my list with 33 entries on a ...
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NVIDIA G-SYNC 'unvalidated' for officially validated monitor?

I'm looking at a green NVIDIA G-SYNC sticker on the bezel of my monitor, yet the NVIDIA driver tells me 'G-SYNC Unvalidated', and I can only get G-SYNC working when I specifically set 'Allow G-SYNC on ...
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Philips 275E1 2560x1440 with nVidia GT730 (EDID problem) not working

I would like to run QHD (2560x1440) resolution with the above setup (under Fedora 33, nvidia 390.141) via DVI output (connected via a DVI KVM-Switch and a DVI-HDMI adapter), but ran into problems ...
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size of display connected via HDMI was'nt automatically detected correctly (xUbuntu)

I have xUbuntu 18.04.4 LTS (XFCE 4.12 + 4.15.0-111 Linux kernel) on the Dell Vostro 3360 laptop. When I connected the external display (Samsung SyncMaster T240) via VGA cable - all is good and I got ...
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4 votes
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544 views

How to drive an external monitor that does not send hotplug info over HDMI?

Since a few days I have the Dasung Paperlike HD device and after using it for one day I'm afraid the utility that comes with it, did something it shouldn't have done. Hot-plug events First, of all, ...
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2 answers
1k views

Custom EDID for specfic physical monitor, not output

I have a setup where I connect to two different displays depending on where I am. I would like to use a mode which one of the monitors doesn't allow, but that won't be loaded when any other display is ...
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Run an X program when a monitor is plugged in

I have a computer with a bizarre bug. When I turn off the monitor and turn it back on, the screen stays blank. This only happens while logged in under X (but not at the Gdm screen). I've found a way ...
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2 votes
1 answer
2k views

How to load a modified EDID into RAM after boot to fix defective monitor's EDID report?

I've acquired a couple of HP L1750 monitors, which have VGA & DVI inputs. The VGA inputs work without issue. However, the DVI input only works until Kernel Mode Setting (KMS) occurs, after which ...
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3 votes
1 answer
1k views

How to set bytes of EDID on a i2c device

I have a monitor LG E2251 (monitor details). My computer was connected to the monitor via DVI-I cable; after the power supply broke, the display went black. I rebooted the system and all seemed ok. I ...
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Custom modeline calculation -> monitor "artefact"

I am trying to get a custom resolution to run on my 4k, 60Hz TV. I am mostly working on a Thinkpad that only supports 4k@30Hz via Display Port. I would much rather work on a lower resolution with a ...
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2 answers
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Second monitor not recognized - xorg.conf file [resolved]

I'm trying to use this monitor Acer XB270H, with my Ubuntu laptop, but it is not recognized, appears cropped with incorrect resolution. Note: I first was using the docking station with the monitor DP ...
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2 votes
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334 views

Enforce native resolution on Linux Mint 18

My graphics card is Nvidia GT 440 and I'm using the nvidia binary driver v384.130 on Linux Mint 18. I have a Dell U2518D which has a native resolution of 2560x1440@60Hz and the problem is that the ...
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3 votes
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EDID is not loading from /lib/firmware

I wanted to load customized edid so I have added it's name as "drm_kms_helper.edid_firmware=edid/edid.bin" and I kept the edid under /lib/firmware/edid/. But after booting the system, I cross ...
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How to force HDMI audio (intel card) to be enabled despite receiving broken EDID

The EDID sent by my monitor when directly connected to my graphic card is ok, I dumped it in /lib/firmware/edid/viewsonic.bin. I want to access my monitor through a KVM-switch, an HDMI-audio-...
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2 votes
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2k views

How to set custom EDID manually?

My monitor connects to the videocard through the DVI->VGA adapter, and EDID is not transmitted. If you use Xserver, then this problem is solved by adding previosly saved EDID in xorg.conf: Option ...
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How to edit a monitor's EDID information to change its preferred resolution?

I have a television that I am using as a monitor, but it has some issues resulting from incorrect EDID information on the monitor - physical dimensions are being reported in inches and tenths of ...
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2 votes
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362 views

How to uniquely identify monitor in Linux

I am C++ application which will be binded to specific monitor. Currently I am using edid to identify monitor and disable certain features in the application. This works if monitors are of different ...
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1 answer
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How to enable a custom resolution with nvidia & xorg

Does anyone know the proper settings to use when wanting to enable a resolution not exposed by EDID in a DVI display? I've extensively searched for the right xorg.conf settings but it seems the driver ...
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2 answers
8k views

How to tell intel graphics to use my custom EDID file?

As the topic says: How to tell intel graphics to use my custom EDID file?
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Build custom EDID with several modelines

I would like to build custom EDID using kernel sources. But I need to use several modelines - more refresh rates for same resolution. Is it possible using method in kernel sources? Could you please ...
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EDID KWorkers Overflow

I'm using the IMX6 Quad from Freescale. I'm implemented a custom Linux on it for a personal homemade project. I've noticed a very stange behavior. Some times, randomly, I've got two KWorkers ...
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5 votes
1 answer
2k views

EDID - detect proper DPI and refresh rate values

I just tried to extract EDID file data with read-edid util; The thing is the output shows : $sudo get-edid | decode-edid ... Manufacturer: AUO Model 20ec Serial Number 0 Made week 0 of 2013 EDID ...
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Custom Resolution For vt Console in FreeBSD 10

In FreeBSD 10 there is new vt driver for having nice framebuffer console. By default it chooses resolution from the EDID data of monitor. However, I have a display that has incorrect EDID data. ...
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2 votes
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GNOME prevents high resolution VGA without EDID info over VGA

I recently bought a KVM switch, consisting of a VGA switcher and switchable USB hub. This switch however, does not pass EDID info from the connected display to either of the two connected computers. I ...
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4 votes
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134 views

How to loop over display numbers in .xprofile?

Is there a simple command to get all the display numbers (and only the display numbers) connected to the computer? The use case is that I'd like to have separate colour profiles ~/.color/icc/${display}...
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Setting up HDMI output from Linux console [closed]

I am currently running Debian Wheezy on a HP Microserver N54L with an AMD Radeon 5450 video card. I would like to be able to play audio from the console through the HDMI port of my video card and ...
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4 votes
0 answers
1k views

EDID Invalid on USB DisplayLink Device

I have a Sabrent USB to HDMI adapter which is a DisplayLink device. It's recognized by udl as being a DisplayLink device, yet seems to be rejected/disabled due to having an invalid EDID: [32780....
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30 votes
5 answers
95k views

How to get EDID for a single monitor?

Pending an answer to xrandr detects amplifier as monitor a possible workaround is to blacklist devices with specific EDIDs. Unfortunately xrandr --verbose prints everything in a format which is ...
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2 votes
1 answer
796 views

Cooking EDID and finding values for .S file

It became really annoying and the resolution is bad so I decided to make my EDID and pass that to the Kernel. (I am creating EDID for S20A300B and samsung says in its page the best RES for this ...
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4 votes
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How to make EDID

I read the post here and I tried to make do with what I understood from the post but here are some questions: Where is the /lib/firmware located in for example /usr/src/linux/lib/firmware or /usr/lib/...
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5 votes
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3k views

How to check if EDID can be tusted

read-edid gives me the message "The EDID data should not be trusted as the VBE call failed". Thats okay, but I want to find out, that this data is not reliable, another way, because I can't use read-...
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1 vote
1 answer
1k views

Dual monitor configuration on Intel Ivy Bridge [closed]

I'm trying to set up a dual monitor machine with an Intel DH67BL motherboard, Ivy Bridge i5-3450 CPU and dual Samsung 204b monitors. I can't seem to get the computer to recognize more than one of ...
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3 votes
1 answer
475 views

Bad Resolution - Missing, corrupt after suspend, x121e Mint 11 - Bad EDID?

After travelling with my ThinkPad x121e on suspend my resolution has altered and the correct resolution setting disappeared. This affects the whole computer, when using live USB as well. I do not ...
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2 votes
1 answer
730 views

How can I get real-time information about monitor plug/unplug events?

When I connect or disconnect the USB device, udev shows/monitors that event. But udev is not enough smart to detect the plug-out or plug-in of the monitor. Is there any way/tool/utility from which I ...
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5 votes
3 answers
7k views

Reading EDID from EEPROM

From the link: http://en.wikipedia.org/wiki/Extended_display_identification_data The EDID is often stored in the monitor in a memory device called a serial PROM (programmable read-only memory) or ...
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8 votes
2 answers
8k views

Edid information

I want to gather the Edid information of the monitor. I can get it from the xorg.0.log file when I run X with the -logverbose option. But the problem is that If I switch the monitor (unplug the ...
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