LE 9.80 nightly on RPi 4B - tvservice command does not show any display connected

ghtester · November 24, 2020 at 10:04 PM

It looks something is wrong as on the same RPi 4B HW configuration running LE 9.80 nightly (even latest 20201124) the tvservice command does not find any HDMI display connected in comparision with LE 9.2.6 official so it can't be used on LE 9.80 at all.

LE 9.80:

LE:~ # tvservice -l

0 attached device(s), display ID's are :

LE 9.2.6:

LE:~ # tvservice -l

2 attached device(s), display ID's are :

Display Number 2, type HDMI 0

Display Number 7, type HDMI 1

**HiassofT** · November 24, 2020 at 10:33 PM

This is normal - tvservice uses the legacy functions which aren't relevant for master builds anymore (we still kept the legacy programs for testing ATM).

Use eg modetest to find out what displays are connected and what resolutions are supported.

so long,

Hias

ghtester · November 24, 2020 at 10:36 PM

OK, thanks a lot for a quick reply and sorry for "hoax"...

**HiassofT** · November 24, 2020 at 11:07 PM

No problem at all, this isn't too obvious.

As a rule of thumb: it's best to forget everything you learned about or find on search engines on the legacy style of video configuration/setup on RPi (i.e. hdmi... settings in config.txt)

With the switch to the KMS video driver we now use the same methods to configure video as eg Intel/AMD or all other ARM/... platforms use.

so long,

Hias