linux lcd panel info manufacturer

My info did not show up in XOrg.log. But I figured out that I could get the info from the DRM (Direct Rendering Manager) subcomponent of the linux kernel, which is exposed in sysfs. So I did the following:

There are numerous tools available in Linux, to locate system hardware information, but we will show you how to check hardware manufacturer name, system model and serial number.

We all understand the importance of having this information while reaching out to hardware vendor & this article covers best four commands, that can ease the process & help users for tracking the data faster.

The DMI table accommodates the details of system’s hardware components, along with other useful information such as, serial number, Manufacturer information, Release Date, and BIOS revision, etc.

Use the inxi command along with -M option to display system manufacture information (manufacturer Name, Chassis Information, Product Information, Bios Information and Serial Number) & there you go:

Kernel’s expose some of DMI information to the ‘/sys’ virtual file system. Hence, use ‘grep’ command (shown below) to collect system manufacture information manually:

‘dmesg’ command is used to write the kernel messages (boot-time messages) in Linux before syslogd or klogd start. It obtains data by reading the kernel ring buffer. ‘dmesg’ can be very useful while troubleshooting & also for obtaining information about the hardware on a system.

Most laptop LVDS displays have at least kinda-weird connectors. I don"t support Panelook, and actively avoid that site -- it"s got a paywall between users and documentation, and I refuse to support such a thing in absolutely all cases.

It"s a matter of digital safety, as far as I"m concerned -- websites almost never audit their ad providers, and website-level ad providers, in turn, almost never audit their content sources (the people / organizations / etc providing the actual ads) -- so it"s *extremely* easy for a rogue actor to insert something nasty into the mix. Many such "nasties" need only for the ad to load on the page for the payload to activate, and now that there"s at least one active Linux virus going around, I"m taking even fewer chances than usual.

...you will get a number of links of various sorts. Look *specifically* for links that have a little [PDF] icon next to them, i.e., the acronym "PDF" in a (very!) thin outline of a box. If the entire first page doesn"t have anything for you, look for results from eg datasheetspdf.com datasheet4u.com datasheetarchive.com etc. Datasheet Archive (the last one) is actually my favorite. *Absolutely avoid* Panelook if you"re at all like me, but also twscreen.com hkinventory.com etc -- those are sales sites and you"ll never ever *ever* get a PDF out of them so long as you live. Also avoid lcds-center.com lcds-display.com lcds-source.com etc -- these are particularly egregious, because they"ll return [PDF] results, but the PDFs are generated when you click the link and are in fact sales info only -- nothing actually useful in the sense of a technical document, and nothing that gives you even the faintest glimmer of hope of a way to get one. Screw "em.

Added support for EDID Detailed Timing Descriptor, so MonitorInfoView will display accurate Maximum Resolution information for monitors with high resolution.

The goal is to obtain the manufacturer and product ID and the serial number of the display under the Linux platform. I eventually need to get this information in the program in C++.

This problem is solved by EDID and DDC, as it enables the display to send information to the graphics card it is connected to. The transmission of EDID information usually uses the Display Data Channel protocol, specifically DDC2B, which is based on I²C-bus (DDC1 used a different serial format which never gained popularity). The data is transmitted via the cable connecting the display and the graphics card; VGA, DVI and HDMI are supported.

Many software packages can read and display the EDID information, such as read-edidMicrosoft Windows and the X.Org Server for Linux and BSD unix. Mac OS X natively reads EDID information and programs such as SwitchResX

Some graphics card drivers have historically coped poorly with the EDID, using only its standard timing descriptors rather than its Detailed Timing Descriptors (DTDs). Even in cases where the DTDs were read, the drivers are/were still often limited by the standard timing descriptor limitation that the horizontal/vertical resolutions must be evenly divisible by 8. This means that many graphics cards cannot express the native resolutions of the most common wide screen flat panel displays and liquid crystal display televisions. The number of vertical pixels is calculated from the horizontal resolution and the selected aspect ratio. To be fully expressible, the size of wide screen display must thus be a multiple of 16×9 pixels. For 1366×768 pixel Wide XGA panels the nearest resolution expressible in the EDID standard timing descriptor syntax is 1360×765 pixels, typically leading to 3 pixel thin black bars. Specifying 1368 pixels as the screen width would yield an unnatural screen height of 769.5 pixels.

Many Wide XGA panels do not advertise their native resolution in the standard timing descriptors, instead offering only a resolution of 1280×768. Some panels advertise a resolution only slightly smaller than the native, such as 1360×765. For these panels to be able to show a pixel perfect image, the EDID data must be ignored by the display driver or the driver must correctly interpret the DTD and be able to resolve resolutions whose size is not divisible by 8. Special programs are available to override the standard timing descriptors from EDID data. Even this is not always possible, as some vendors" graphics drivers (notably those of Intel) require specific registry hacks to implement custom resolutions, which can make it very difficult to use the screen"s native resolution.

The CEA EDID Timing Extension was first introduced in EIA/CEA-861, and has since been updated several times, most notably with the 861-B revision (which was version 3 of the extension, adding Short Video Descriptors and advanced audio capability/configuration information), 861-D (published in July 2006 and containing updates to the audio segments), 861-E in 2008, and 861-F which was published on June 4, 2013.

Version 3 also includes four new optional types of data blocks: Video Data Blocks containing the aforementioned Short Video Descriptor (SVD), Audio Data Blocks containing Short Audio Descriptors (SAD), Speaker Allocation Data Blocks containing information about the speaker configuration of the display device, and Vendor Specific Data Blocks which can contain information specific to a given vendor"s use. Subsequent versions of CTA-861 defined additional data blocks.

The Data Block Collection contains one or more data blocks detailing video, audio, and speaker placement information about the display. The blocks can be placed in any order, and the initial byte of each block defines both its type and its length:

A Vendor Specific Data Block (if any) contains as its first three bytes the vendor"s IEEE 24-bit registration number,00 0C 03 means this is a "HDMI Licensing, LLC" specific data block (contains HDMI 1.4 info), C4-5D-D8 means this is a "HDMI Forum" specific data block (contains HDMI 2.0 info), 00 D0 46 means this is "DOLBY LABORATORIES, INC." (contains Dolby Vision info) and 90 84 8b is "HDR10+ Technologies, LLC" (contains HDR10+ info as part of HDMI 2.1 Amendment A1 standard

If a Speaker Allocation Data Block is present, it will consist of three bytes. The second and third are reserved (all 0), but the first contains information about which speakers are present in the display device:

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