Linux/AM3352: LVDS display issue

zhengguang yang

Expert 1390 points

Part Number: AM3352

Tool/software: Linux

LVDS screen shows Please wait... all the time

It is not effective to execute the following instructions：

root@am335x-evm:~/fbv# /etc/init.d/weston restart
Stopping Weston

root@am335x-evm:~# /etc/init.d/matrix-gui-2.0 start
/home/root
Removing stale PID file /var/run/matrix-gui-2.0.pid.
Starting Matrix GUI application.

And sometimes the following information appears：

[ 28.899760] tilcdc 4830e000.lcdc: tilcdc_crtc_irq(0x00000020): FIFO underfow
[ 28.907724] tilcdc 4830e000.lcdc: tilcdc_crtc_irq(0x00000004): Sync lost
[ 28.908042] tilcdc 4830e000.lcdc: tilcdc_crtc_irq(0x00000004): Sync lost

The SDK version we used is 03.01.00.06.

over 7 years ago

0 zhengguang yang over 7 years ago

Expert 1390 points

Hi Ti:
I have trid as the following link:
e2e.ti.com/.../626711
Now the screen displays the following information：
_____ _____ _ _
| _ |___ ___ ___ ___ | _ |___ ___ |_|___ ___| |_
| | _| .'| . | . | | __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
|___| |___|

Arago Project http://arago-project.org am335x-evm tty1

Arago 2016.08 am335x-evm tty1

am335x-evm login:

0 Kemal R. Shakir over 7 years ago in reply to zhengguang yang

TI__Guru 55345 points

Hello zhengguang,

Please, read "LCDC memory bandwidth issues" section at this link about FIFO underflow and sync lost issue.

Best regards,
Kemal

0 zhengguang yang over 7 years ago in reply to Kemal R. Shakir

Expert 1390 points

Hi Kemal:

This patch solved FIFO underflow and sync lost issue.

But how to solve the problem of display incorrectly.

0 Kemal R. Shakir over 7 years ago in reply to zhengguang yang

TI__Guru 55345 points

Can attach the complete boot log and /var/log/weston.log file?

0 zhengguang yang over 7 years ago in reply to Kemal R. Shakir

Expert 1390 points

Fullscreen 3566.weston.log Download

Date: 2016-10-05 UTC
[06:48:26.777] weston 1.9.0
               http://wayland.freedesktop.org
               Bug reports to: https://bugs.freedesktop.org/enter_bug.cgi?product=Wayland&component=weston&version=1.9.0
               Build: 1.8.93-2-gb05cdb8 configure.ac: bump to version 1.9.0 for the official release (2015-09-21 18:11:26 -0700)
[06:48:26.777] OS: Linux, 4.4.19-gdb0b54cdad, #32 PREEMPT Fri Jan 19 17:18:13 CST 2018, armv7l
[06:48:26.780] Using config file '/etc//weston.ini'
[06:48:26.784] Loading module '/usr/lib/weston/drm-backend.so'
[06:48:26.877] Output repaint window is 7 ms maximum.
[06:48:26.877] initializing drm backend
[06:48:26.892] using /dev/dri/card0
[06:48:26.895] Loading module '/usr/lib/weston/gl-renderer.so'
failed to load module: /usr/lib/gbm/gbm_dri.so: cannot open shared object file: No such file or directory
failed to load module: /usr/lib/gbm/gbm_gallium_drm.so: cannot open shared object file: No such file or directory
loaded module : gbm_pvr.so
found valid GBM backend : gbm_pvr.so
[06:48:27.027] warning: either no EGL_EXT_platform_base support or specific platform support; falling back to eglGetDisplay.
[06:48:27.049] failed to initialize display
[06:48:27.049] EGL error state: EGL_BAD_ALLOC (0x3003)
[06:48:27.049] failed to initialize egl
[06:48:27.054] fatal: failed to create compositor backend
PVR:(Error): OpenServices: PVRDRMOpenRender failed [0, ]
PVR:(Error): PVRSRVConnect: Unable to open connection. [0, ]
PVR:(Error): Couldn't connect to services [0, ]

0 Kemal R. Shakir over 7 years ago in reply to zhengguang yang

TI__Guru 55345 points

AM3352 doesn't have SGX accelerator but in the delivered Processor SDK the graphics hardware acceleration is enabled by default. To be able to use the wayland on AM3352 with non-SGX software rendering you will need to rebuild the Processor SDK with disabled SGX acceleration.

I am posting the commands for building the latest Processor SDK config processor-sdk-04.02.00.09-config.txt

$ sudo apt-get install git build-essential python diffstat texinfo gawk chrpath dos2unix wget unzip socat doxygen libc6:i386 libncurses5:i386 libstdc++6:i386 libz1:i386

$ sudo dpkg-reconfigure dash
# Select "No" when prompted.

$ wget https://releases.linaro.org/components/toolchain/binaries/6.2-2016.11/arm-linux-gnueabihf/gcc-linaro-6.2.1-2016.11-x86_64_arm-linux-gnueabihf.tar.xz
$ tar -Jxvf gcc-linaro-6.2.1-2016.11-x86_64_arm-linux-gnueabihf.tar.xz -C $HOME

$ git clone git://arago-project.org/git/projects/oe-layersetup.git tisdk
$ cd tisdk
$ ./oe-layertool-setup.sh -f configs/processor-sdk/processor-sdk-04.02.00.09-config.txt
$ cd build
$ . conf/setenv
$ export PATH=$HOME/gcc-linaro-6.2.1-2016.11-x86_64_arm-linux-gnueabihf/bin:$PATH
#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
# Add the following to the bottom of <tisdk>/build/conf/local.conf before launching the last bitbake command
#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
MACHINE_FEATURES_remove = "sgx"
PACKAGECONFIG_remove = "wayland-egl"

IMAGE_INSTALL_remove = "chromium-wayland"
BBMASK="meta-browser/recipes-browser/chromium/chromium-wayland_53.0.2785.143.bb meta-arago/meta-arago-distro/recipes-graphics/wayland/wayland-ivi-extension_1.11.0.bb"

MULTIMEDIA_remove_ti33x = "chromium-wayland"
GRAPHICS_WESTON_remove = "wayland-ivi-extension"
#----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
$ MACHINE=am335x-evm bitbake tisdk-rootfs-image

0 zhengguang yang over 7 years ago in reply to Kemal R. Shakir

Expert 1390 points

I have compiled as you said.But Compiled failure.

The failure information is as follows：

5037.log.do_compile.txt

0 Kemal R. Shakir over 7 years ago in reply to zhengguang yang

TI__Guru 55345 points

Which Processor SDK config file you are using processor-sdk-03.00.00.04-config.txt or processor-sdk-03.01.00.06-config.txt?

0 zhengguang yang over 7 years ago in reply to Kemal R. Shakir

Expert 1390 points

Thank you very much.
I deleted all the compiled files. Now compiled successfully

Processors

Processors forum

Linux/AM3352: LVDS display issue