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+--- Forum: Linux on RockPro64 (https://forum.pine64.org/forumdisplay.php?fid=101)
+--- Thread: cdn-dp fec00000.dp: Direct firmware load for rockchip/dptx.bin failed with error -2 (/showthread.php?tid=6510)
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RE: cdn-dp fec00000.dp: Direct firmware load for rockchip/dptx.bin failed with error -2 - nuumio - 01-18-2019
That missing file seems to be firmware for "rk3399 Type-C DisplayPort controller" (first commit in log: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/log/rockchip/dptx.bin). In Ubuntu it's in package linux-firmware:
Code:
$ dpkg -S dptx.bin
linux-firmware: /lib/firmware/rockchip/dptx.binI haven't tried Debian/Stretch myself but firmware-linux package sounds promising there (https://packages.debian.org/stretch-backports/firmware-linux).