You can use the old style of options to rotate the screen: DISPLAY=:0 xrandr -o left
On Fri, Dec 20, 2019 at 7:51 AM djh <x...@howorth.org.uk> wrote: > I've just attached a display to a Pi 3B+. It's an old display attached > through a VGA-HDMI converter (no idea whether that's relevant!). I've > also attached a USB keyboard, though not yet a mouse. > > I want to run the display in portrait mode. When I booted it came up > sideways (in landscape mode) as I expected. I started trying to use > xrandr via ssh to configure the display but haven't figured out how to > get it to work. Here's a sample of some output: > > $ xrandr -display :0 --prop > xrandr: Failed to get size of gamma for output default > Screen 0: minimum 1280 x 1024, current 1280 x 1024, maximum 1280 x 1024 > default connected 1280x1024+0+0 0mm x 0mm > non-desktop: 0 > supported: 0, 1 > 1280x1024 0.00* > $ xrandr -display :0 --output 'default' --rotate left > xrandr: output default cannot use rotation "left" reflection "none" > > I searched but haven't found any articles that explain my problem. So I > thought I'd try lxrandr instead. That pops up a dialog box on screen > saying "Unable to get monitor information!" and prints an error on the > command line: > > $ lxrandr --display :0 > Can't open display > > Somebody then told me how to rotate it 'the pi way', by > editing /boot/config.txt That worked, but I'd like to understand why > the X way doesn't. I'm also unable to access the display remotely. From > my ssh session on the pi I can launch xeyes for example: > > $ DISPLAY=:0 xeyes > ^C # terminate from keyboard > > and I turned off access control: > > $ DISPLAY=:0 xhost + > access control disabled, clients can connect from any host > > But I can't connect to the pi from another host: > > $ DISPLAY=RpiBplus:0 xeyes > Error: Can't open display: RpiBplus:0 > $ ping RpiBplus > PING RpiBplus.fritz.box (192.168.1.22) 56(84) bytes of data. > 64 bytes from RpiBplus.fritz.box (192.168.1.22): icmp_seq=1 ttl=64 > time=0.314 ms > $ DISPLAY=192.168.1.22:0 xeyes > Error: Can't open display: 192.168.1.22:0 > > I'd appreciate any suggestion for places to look to explain this > mystery to me, or actual solutions of course :) > > Thanks, Dave > _______________________________________________ > xorg@lists.x.org: X.Org support > Archives: http://lists.freedesktop.org/archives/xorg > Info: https://lists.x.org/mailman/listinfo/xorg > Your subscription address: %(user_address)s >
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