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Display resolution messed up when switching to console

Question asked by Roberto Mainetti on May 11, 2016
Latest reply on May 24, 2016 by Roberto Mainetti



I'm using a board with an iMX6DL with a yocto poky qt-in-use-image distro.

I'm not launching the default application, instead I'm using a qt example this way:

export DISPLAY=:0

cd ~/declarative/animation/basics/color-animation

Xorg &



It works like a charm, but when I try to switch to a console with <ctrl><alt><f1> and then go back to X with <ctrl><alt><f2> (or <f3> sometimes), the image on the LVDS display is all messed up. It's composed of black and white lines (no colour signals). The application is still responding (I can see in some way the image, messed up) and I can move the mouse pointer.

The same issue happens when I try to suspend with:

echo mem > /sys/power/state


echo standby > /sys/power/state

and then resume with the power button. The image becomes a mess.

If I kill Xorg and the qt example, and launch them again, I get a perfect image again.


In the log /var/volatile/log/Xorg.0.log the weird outputs are:


[2673309.221] (**) Option "config_info" "udev:/sys/devices/soc0/soc.1/2100000.aips-bus/2184200.usb/ci_hdrc.1/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3:1.0/input/input2/event2"

[2673309.221] (II) XINPUT: Adding extended input device "Lite-On Technology Corp. HP Basic USB Keyboard" (type: KEYBOARD, id 8)

[2673309.221] (**) Option "xkb_rules" "evdev"

[2673309.221] (**) Option "xkb_model" "pc104"

[2673309.221] (**) Option "xkb_layout" "us"

[2673392.361] setversion 1.4 failed

[2673744.380] (II) evdev: Lite-On Technology Corp. HP Basic USB Keyboard: Close

[2673744.380] (II) UnloadModule: "evdev"

[2673744.381] (II) evdev: USB Optical Mouse: Close

[2673744.381] (II) UnloadModule: "evdev"

[2673744.381] (II) evdev: 20b8000.kpp: Close




[2673308.891] drmOpenDevice: node name is /dev/dri/card0

[2673308.891] drmOpenDevice: open result is 13, (OK)

[2673308.891] drmOpenByBusid: drmOpenMinor returns 13

[2673308.891] drmOpenByBusid: Interface 1.4 failed, trying 1.1

[2673308.891] drmOpenByBusid: drmGetBusid reports platform:Vivante GCCore:00

[2673308.894] (EE) AIGLX error: vivante exports no extensions (/usr/lib/dri/ undefined symbol: __driDriverExtensions)

[2673308.894] (EE) AIGLX: reverting to software rendering

[2673308.917] (II) AIGLX: Loaded and initialized swrast

[2673308.918] (II) GLX: Initialized DRISWRAST GL provider for screen 0

[2673308.921] (II) VIVANTE(0): Setting screen physical size to 211 x 127

[2673309.082] (II) config/udev: Adding drm device (/dev/dri/card0)

[2673309.084] (II) config/udev: Adding input device 20b8000.kpp (/dev/input/event0)

[2673309.084] (**) 20b8000.kpp: Applying InputClass "evdev keyboard catchall"

[2673309.084] (II) LoadModule: "evdev"

[2673309.084] (II) Loading /usr/lib/xorg/modules/input/