leelabks
Posts: 15
Joined: Mon Aug 28, 2017 8:23 am

Cannot Rotate the LCD display touch screen

Mon Aug 28, 2017 8:50 am

I am using the latest Raspian ("Linux raspberrypi 4.4.50-v7+") downloaded from raspberrypi.org, i can use the command "display_rotate=2" to rotate the screen display 180degC but i cannot rotate the capacitive touch display. After some study, i use "lcd_rotate=2", but i still cannot achieve to rotate the screen and the touch display.

i found some people are using xinput to rotate the touchscreen function, "viewtopic.php?f=108&t=120793". i have follow the instruction to install the xinput (sudo apt-get install xinput), but when i apply the following command,

DISPLAY=:0 xinput set-prop 'HID 19e2:2533' 'Evdev Axes Swap' 1

then the system reported,

property 'Evdev Axes Swap' doesn't exist, you need to specify its type and format.

i have run out of idea to rotate the capacitive touch screen, can anyone help to give some idea to rotate the capacitive touch screen?

DirkS
Posts: 9968
Joined: Tue Jun 19, 2012 9:46 pm
Location: Essex, UK

Re: Cannot Rotate the LCD display touch screen

Mon Aug 28, 2017 9:29 am

I am using the latest Raspian ("Linux raspberrypi 4.4.50-v7+")
No, you're not:

Code: Select all

Linux raspi07 4.9.41+ #1023 Tue Aug 8 15:47:12 BST 2017 armv6l GNU/Linux
DISPLAY=:0 xinput set-prop 'HID 19e2:2533' 'Evdev Axes Swap' 1
Are you using the Official RPF screen?
If you do then using that usb ID will probably not work...

leelabks
Posts: 15
Joined: Mon Aug 28, 2017 8:23 am

Re: Cannot Rotate the LCD display touch screen

Tue Aug 29, 2017 7:39 am

i am not using the original Raspberry Pi 7 inch LCD panel, this LCD panel is from another brand. However, i am able to use the capacitive touch panel without rotating the screen. The problem is i cannot rotate the touch panel. In the earlier post, you mentioned that the USB ID will probably not work, can you explain more on this and what i should do to make it work? Thanks.

DirkS
Posts: 9968
Joined: Tue Jun 19, 2012 9:46 pm
Location: Essex, UK

Re: Cannot Rotate the LCD display touch screen

Tue Aug 29, 2017 7:07 pm

leelabks wrote:
Tue Aug 29, 2017 7:39 am
In the earlier post, you mentioned that the USB ID will probably not work, can you explain more on this and what i should do to make it work? Thanks.
I said that if you were using the RPF screen using the USB would not work.
That's because the RPF screen doesn't use USB...

You probably need to create / configure the X11 touch calibration file.
No idea what to put in there to make it work for you, though.

texy
Forum Moderator
Forum Moderator
Posts: 5160
Joined: Sat Mar 03, 2012 10:59 am
Location: Berkshire, England

Re: Cannot Rotate the LCD display touch screen

Wed Aug 30, 2017 6:47 am

leelabks wrote:
Tue Aug 29, 2017 7:39 am
i am not using the original Raspberry Pi 7 inch LCD panel,
..posted in the wrong sub-forum, so moving to Troubleshooting.
Texy
Various male/female 40- and 26-way GPIO header for sale here ( IDEAL FOR YOUR PiZero ):
https://www.raspberrypi.org/forums/viewtopic.php?f=93&t=147682#p971555

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