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I have bought a Raspberry Pi 7" touch screen, and it seems to work fine.

When the boot process is running, the normal Linux boot messages appear on the screen - but after the screen is filled, it seems to continue to write below the screen. As if the screen is "underscanned".

The LINES environment variable says LINES=48. Counting the number of lines visible on screen, I get to 30.

Values in /boot/config.txt:

lcd_rotate=2
disable_overscan=1
dtparam=i2c_arm=off
dtparam=audio=on
enable_uart=0
dtoverlay=vc4-kms-v3d

Values in /etc/default/console-setup:

ACTIVE_CONSOLES="/dev/tty[1-6]"
CHARMAP="UTF-8"
CODESET="guess"
FONTFACE="Terminus"
FONTSIZE="8x16"
VIDEOMODE=

What should I do?

The screen resolution is 800x480. The problem does not go away after the boot process. I have to type stty rows 30 to make it look okay.

  • What is your screen resolution and how are things after the boot process completes – Mohammad Ali Dec 20 '16 at 20:05
  • @MohammadAli The screen resolution is 800x480. The problem does not go away after the boot process. I have to type stty rows 30 to make it look okay. – frodeborli Dec 21 '16 at 8:55
  • But in another full screen program do you have this problem? Or is it unique to the console? – Mohammad Ali Dec 21 '16 at 13:21
  • @MohammadAli It is only in the console. When I start X, the screen size seem right. – frodeborli Dec 21 '16 at 14:39
  • The screen may seem right when it is not, can you test it by running something like scratch or the web browser in full screen – Mohammad Ali Dec 21 '16 at 15:23

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