I'm currently try to get my asus mb168b to work with my raspberry pi 3.
According to some research on the internet i needed to compile the raspberry kernel with support for displaylink framebuffer.
After some trail and error I finally got this running and I have now a running rpi 3 with kernel 4.4.42-v7+ (pixel os) with framebuffer support enabled.
When i plug in the asus display i get this message from dmesg:
[ 165.803651] usb 1-1.4.2: USB disconnect, device number 7
[ 170.749558] usb 1-1.4.2: new high-speed USB device number 8 using dwc_otg
[ 170.850447] usb 1-1.4.2: New USB device found, idVendor=17e9, idProduct=ff03
[ 170.850469] usb 1-1.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 170.850483] usb 1-1.4.2: Product: MB168B
[ 170.850495] usb 1-1.4.2: Manufacturer: DisplayLink
[ 170.850508] usb 1-1.4.2: SerialNumber: G4LMTF010839
lsusb shows me the following output:
Bus 001 Device 008: ID 17e9:ff03 DisplayLink
[...]
Before i enabled the framebuffer support i was not able to install the displaylink drivers because of missing dkms stuff.
With the patched kernel I was able to install the drivers without any problems.
Since it didn't work after the driver installation i looked further and saw that some people said that the "old" udlfb driver was the problem and that one should use the new udl drivers.
So i blacklisted the old udlfb and enabled the new udl drivers.
lsmod:
Module Size Used by
bnep 10340 2
hci_uart 17943 1
btbcm 5929 1 hci_uart
bluetooth 326067 22 bnep,btbcm,hci_uart
evdi 36280 0
brcmfmac 186282 0
brcmutil 5661 1 brcmfmac
cfg80211 428833 1 brcmfmac
joydev 9024 0
rfkill 16018 4 cfg80211,bluetooth
snd_bcm2835 20447 1
snd_pcm 75890 1 snd_bcm2835
snd_timer 19288 1 snd_pcm
snd 51908 5 snd_bcm2835,snd_timer,snd_pcm
bcm2835_gpiomem 3040 0
bcm2835_wdt 3225 0
evdev 11396 6
uio_pdrv_genirq 3164 0
uio 8000 1 uio_pdrv_genirq
udl 21984 0
drm_kms_helper 101028 2 udl,evdi
drm 262526 3 udl,evdi,drm_kms_helper
i2c_dev 5859 0
fuse 84037 3
ipv6 347537 46
As can be seen in the lsmod output all needed modules are loaded:
- udl
- drm
- evdi (displaylink open source driver module)
This also did not prove a solution to my problem as there is still no second framebuffer device besides the hdmi one.
I've seen some blog posts of people that got the display working but they all had a second /dev/fb* device after booting with the new kernel.
What other steps could I do to get the display working?
