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timvideos / edid.tv

EDID Database Website
GNU General Public License v2.0
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Linux alternative to xrandr, to get all EDID #43

Open bp0 opened 5 years ago

bp0 commented 5 years ago

xrandr requires X, so it can't be used to get EDID from an X-less machine. Also, the EDID may be from a remote machine if ssh -X.

find /sys/devices -name edid -print -exec hexdump -v -e '16/1 "%02x""\n"' {} \;
linuxhw commented 4 years ago

edid-decode /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/edid

or

edid-decode /sys/class/drm/card0-LVDS-1/edid ?

Which is most reliable way?

bp0 commented 4 years ago

The second one is a symlink to the first, for convenience. Only those in the /sys/devices tree are real, but places like /sys/class/drm can be used to get flat lists of devices in the tree. In the future, a unified /sys/subsystem/... is to replace class, bus, block from /sys, as I understand it, but those will continue to exist for a long time.

On Wed, Feb 19, 2020, 1:14 AM Linux Hardware Project < notifications@github.com> wrote:

edid-decode /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/edid

or

edid-decode /sys/class/drm/card0-LVDS-1/edid ?

Which is most reliable way?

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