RPI4B, Volumio 3, can't get the DSI Waveshare 4.3 display to rotate

Help and Support
1

Hi all, I’m new to volumio but it rocks! I’m building a custom stereo for my daughter in a beautifully carved old wooden small chest. All is going well but for one minor thing: I can’t get the display to rotate the image by 180°, which would lead to much better cable management.

My setup:

reading through this forum for other display (I couldn’t find anything for this one) I noticed you usually can get the display to rotate, but then need to fix the touchscreen.
Problem is, I can’t even get it to rotate, so I have not bothered with touch screen yet.

What I tried:

  • add display_rotate = 2, as per wiki linked above (I tried as well display_lcd_rotate =2 without success)
    in the userconfig.txt file
  • changing settings in the touch display plugin

I can’t get it to rotate. Any hint? What could I try?

but every time it reboots with the default rotation.

2

Does rotating by 90 or 270 deg. work?

Please post the output of

cat /boot/userconfig.txt

cat /boot/config.txt

and

lsmod

3

hi, thanks for replying.

I never tested 90 and 270 form the “Touch Display” plugin, and lo and behold: those work! Both display rotation AND touchscreen rotation, so they work fine.

It’s only 180 that does not work :frowning: which is the one I need. here the output from ORIGINAL file, no changes, without adding any lcd_rotate etc

config.txt

DO NOT EDIT THIS FILE

APPLY CUSTOM PARAMETERS TO userconfig.txt

initramfs volumio.initrd
gpu_mem=128
gpu_mem_256=32
gpu_mem_512=32
gpu_mem_1024=128
max_usb_current=1
[pi5]
usb_max_current_enable=1
[all]
include volumioconfig.txt
include userconfig.txt

userconfig.txt: nothing, just this comment.

Add your custom config.txt options to this file, which will be preserved during updates

NB: Here is where I tried to put display_rotate = 2 when the touch display plugin didn’t work as I hoped. That did not work either

finally lsmod:

volumio@volumio:~$ lsmod
Module Size Used by
nls_utf8 16384 1
sg 28672 0
hid_logitech_hidpp 40960 0
hid_logitech_dj 32768 0
cmac 16384 1
bnep 20480 2
nft_chain_nat 16384 4
xt_REDIRECT 16384 1
nf_nat 49152 2 nft_chain_nat,xt_REDIRECT
nf_conntrack 135168 2 xt_REDIRECT,nf_nat
nf_defrag_ipv6 20480 1 nf_conntrack
nf_defrag_ipv4 16384 1 nf_conntrack
xt_tcpudp 16384 1
nft_compat 20480 2
nf_tables 237568 5 nft_compat,nft_chain_nat
nfnetlink 20480 2 nft_compat,nf_tables
8021q 32768 0
garp 16384 1 8021q
stp 16384 1 garp
llc 16384 2 garp,stp
joydev 20480 0
brcmfmac 331776 0
hci_uart 40960 0
btbcm 20480 1 hci_uart
bluetooth 507904 24 hci_uart,bnep,btbcm
snd_bcm2835 24576 2
brcmutil 20480 1 brcmfmac
bcm2835_codec 45056 0
cfg80211 815104 1 brcmfmac
snd_pcm 122880 1 snd_bcm2835
bcm2835_isp 32768 0
rpivid_hevc 45056 0
snd_seq 69632 0
bcm2835_v4l2 45056 0
v4l2_mem2mem 40960 2 rpivid_hevc,bcm2835_codec
ecdh_generic 16384 2 bluetooth
snd_seq_device 16384 1 snd_seq
ecc 40960 1 ecdh_generic
bcm2835_mmal_vchiq 36864 3 bcm2835_isp,bcm2835_codec,bcm2835_v4l2
videobuf2_vmalloc 16384 1 bcm2835_v4l2
videobuf2_dma_contig 20480 3 rpivid_hevc,bcm2835_isp,bcm2835_codec
videobuf2_memops 16384 2 videobuf2_dma_contig,videobuf2_vmalloc
snd_timer 36864 2 snd_seq,snd_pcm
raspberrypi_ts 16384 0
raspberrypi_hwmon 16384 0
rfkill 32768 6 bluetooth,cfg80211
videobuf2_v4l2 32768 5 rpivid_hevc,bcm2835_isp,bcm2835_codec,bcm2835_v4l2,v4l2_mem2mem
videobuf2_common 65536 9 rpivid_hevc,bcm2835_isp,bcm2835_codec,videobuf2_dma_contig,videobuf2_vmalloc,videobuf2_memops,bcm2835_v4l2,v4l2_mem2mem,videobuf2_v4l2
videodev 266240 7 rpivid_hevc,bcm2835_isp,bcm2835_codec,videobuf2_common,bcm2835_v4l2,v4l2_mem2mem,videobuf2_v4l2
snd 94208 9 snd_seq,snd_timer,snd_seq_device,snd_bcm2835,snd_pcm
i2c_bcm2835 16384 0
vc_sm_cma 32768 2 bcm2835_isp,bcm2835_mmal_vchiq
rpi_backlight 16384 0
raspberrypi_gpiomem 16384 0
mc 57344 7 rpivid_hevc,bcm2835_isp,bcm2835_codec,videobuf2_common,videodev,v4l2_mem2mem,videobuf2_v4l2
backlight 20480 1 rpi_backlight
nvmem_rmem 16384 0
uio_pdrv_genirq 16384 0
uio 24576 1 uio_pdrv_genirq
i2c_dev 16384 0
ip_tables 28672 0
x_tables 36864 4 ip_tables,nft_compat,xt_tcpudp,xt_REDIRECT
ipv6 520192 70
squashfs 53248 1
overlay 118784 1
volumio@volumio:~$ exit
exit

4

Please check if adding

display_lcd_rotate=0x30000

to “/boot/userconfig.txt” would rotate the display (it will not rotate touch).

5

Thanks!! This works, but it does not rotate touch as expected.
So I did the rotation with “CalibrationMatrix” as per 4.3 DSI waveshare wiki, and now all works as desired!

Many many thanks @gvolt , really appreciate it!

Just for my understanding, what does 0x30000 does? Because I google it but couldn’t find any indication.

6

It combines flipping the display horizontally (0x10000) and vertically (0x20000) which has the same effect as rotating by 180 deg.

What you could also try instead is adding

dtoverlay=vc4-kms-v3d
dtoverlay=vc4-kms-dsi-7inch

to “/boot/userconfig.txt” and set rotation from the plugin’s config page. Beforehand you would have to remove your own “CalibrationMatrix” modification, too.