In brief, I use pi3 with touch screen. due to my pi’case I must rotate the screen 180 degree (the power line phone line hdmi will be up).
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when I install ubuntu mate completely, the screen is in normal mode everything is ok, issues coming after I change config.txt in boot partition which I modify lcd_rotate=2 (rotate 180 degree).the mouse does not show in the touch point, on the country the anti corner eg I touch up-left it showed in down-right i touch down-left it shows in up-right.
obviously screen show rotate but touch screen less the corresponding handling.I love ubuntu mate so I hope to work this problem out like raspbian.Thank you.