I've verified that dw_hdmi tracks when there is a monitor connected or not and reacts to it, there are logs that are generated when the TV/Monitor goes into standby and this is true even if DDC cannot be read. My original problem is that if the EDID data cannot be read then dw_hdmi will enter DVI mode confiuration, with which I cannot get sound, other than that the driver works properly. On Thu, Nov 9, 2017 at 4:28 PM, Russell King - ARM Linux <linux@xxxxxxxxxxxxxxx> wrote: > On Thu, Nov 09, 2017 at 05:01:35PM +0200, Jani Nikula wrote: >> On Thu, 09 Nov 2017, Luís Mendes <luis.p.mendes@xxxxxxxxx> wrote: >> > Hi Jani, >> > >> > I tried: >> > git clone git://people.freedesktop.org/~airlied/linux -b drm-next >> > --depth=1 --single-branch >> > >> > I got this: >> > EDID isn't loaded from file >> > >> > # cat /proc/cmdline >> > console=ttymxc0,115200 root=/dev/sda2 rw video=HDMI-A-1:1920x1080M@60 >> > drm.edid_firmware=edid/ktc_edid.bin dw_hdmi.dyndbg=+pfl cma=128M >> >> Please try adding D at the end of your video= parameter to force >> connector on. Otherwise it'll do a ddc probe which apparently fails with >> your display. > > I do hope you're not converting dw-hdmi to use DDC probing and having it > ignore the hotplug signal. dw-hdmi has to work with AV setups, which > include an AV receiver, and that includes the AV receiver modifying the > HDMI data when: > > (a) the TV is turned off or on. > (b) the AV receiver is placed into or out of standby > > and it informs sources by pulsing the HDMI HPD signal, as per the HDMI > specification. Proving the presence of DDC as a means of detection > won't pick up on these changes, and will cause a regression in the > driver. > > -- > RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ > FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up > According to speedtest.net: 8.21Mbps down 510kbps up _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
