On Mon, Sep 07, 2020 at 02:03:40PM +0300, Mika Westerberg wrote: > Kai-Heng reported that sometimes DROM parsing of ASUS PA27AC Thunderbolt 3 > monitor fails. This makes the driver to fail to add the device so only > DisplayPort tunneling is functional. Maybe the DROM is contained in an external EEPROM attached via slow SPI or i2c and cannot be read in time before a response on the control channel is due? Does it help to always delay 100 ms before performing the DROM read with this display? Perhaps a quirk specific for this display is more appropriate than a change which affects all devices? Because this way of working around problems is difficult to maintain long term. Thanks, Lukas
