[SOLVED] Wandboard greyscale HDMI-output with kodi-imx

[Peedy]

Hello,

this line in uEnv.txt fixed the issue on xbmc-imx:

$this->bbcode_second_pass_code('', 'video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=16')

hint out of: http://archlinuxarm.org/forum/viewtopic.php?f=45&t=7068

but now, I found no hint for kodi-imx 14.1-2 from alarm.

Any idea?

My whole uEnv.txt:

$this->bbcode_second_pass_code('', 'initrd_high=0xffffffff
fdt_high=0xffffffff
dtb_file=imx6q-wandboard.dtb

console=ttymxc0,115200

mmcroot=/dev/mmcblk0p2 rw
mmcrootfstype=f2fs rootwait fixrtc

optargs=console=tty0

video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=16


mmc_load_image=load mmc ${mmcdev}:${mmcpart} 0x10000000 zImage
mmc_load_initrd=load mmc ${mmcdev}:${mmcpart} 0x12000000 uInitrd; setenv
initrd_size ${filesize}
mmc_load_dtb=load mmc ${mmcdev}:${mmcpart} 0x11ff0000 /dtbs/${dtb_file}

mmcargs=setenv bootargs console=${console} ${optargs} root=${mmcroot}
rootfstype=${mmcrootfstype} ${video}

#Just: zImage
xyz_mmcboot=run mmc_load_image; run mmc_load_dtb; echo Booting from mmc ...
loaduimage=run xyz_mmcboot; run mmcargs; bootz 0x10000000 - 0x11ff0000

#zImage and initrd
#xyz_mmcboot=run mmc_load_image; run mmc_load_initrd; run mmc_load_dtb;
#echo
#Booting from mmc ...
#loaduimage=run xyz_mmcboot; run mmcargs; bootz 0x10000000')

Cheers ... Peedy

[WarheadsSE]

I wonder if it is not liking the color palette for some reason.. I've never seen that.

[pepedog]

Try bpp=24
Unlikely to be a colorspace problem but have a look here http://www.solid-run.com/community/topi ... tml#p11513

[Peedy]

Hi,
bpp=24 does not solve the prob and I tried it also with bpp=32 ...
I forgot to say, that the picture occurs as vertical greyscaled lines and the last 30%(right) vertical side has shifted to the 1st 30%(left).
I looks like a clocking/syncing issue.
This phenomena is only under kodi, the shell output is sharp, clear and unscrumbled.

The HDMI output-information is:
$this->bbcode_second_pass_code('', 'mxc_sdc_fb fb.26: 1920x1080 h_sync,r,l: 44,88,148 v_sync,l,u: 5,4,36 pixclock=148500000 Hz')

cheers ... Peedy

[pepedog]

Check picture format on TV, name varies.
Maybe tv doesn't support 1080?

[Peedy]

I'm shure, that my Samsung LED UE46F6270 supports FullHD (1080p).
Because it worked with the modded uEnv.txt and xbmc-imx, too.

I tried to modify kodi-displaysettings, but these fields are inactive.
It runs in windowed mode and 1920x1080p.

More hints ? ... Peedy

[setti]

I had the same greyscale issue on my WB Quad and remember that it had to do with the resolution. Ive got greyscale if video was set to 1280x720
My current uEnv.txt solved this issue:
$this->bbcode_second_pass_code('', '# cat /boot/uEnv.txt
mmcroot=/dev/sda1 rw rootwait
video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=16
optargs=elevator=noop consoleblank=0 vt.global_cursor_default=0 audit=0 splash')

PS: Im running a samsung tv (D Series), too.

Ive a recent kernel:
$this->bbcode_second_pass_code('', '# uname -a
Linux wandboard 3.14.14-1 #1 SMP Sat Dec 27 00:43:17 CET 2014 armv7l GNU/Linux')
Built from https://github.com/CrawX/PKGBUILDs/tree ... -wandboard

[Peedy]

After building CruXs kernel, I found out, that f2fs was disabled in .config
after adding f2fs-support the kernel was able to handle my f2fs-rootpartition.
well ... I took a while to build a running kernel.

$this->bbcode_second_pass_code('', 'Linux alarm 3.14.14-2 #2 SMP Thu Feb 26 10:37:47 UTC 2015 armv7l GNU/Linux')

uEnv.txt was modified, as you wrote.

Tnx for sharing your knowledge, but your hint doesn't solve the prob
... maybe a fsl-fb driver prob?

Ready to copy for Ideas ... Peedy

[kingofkeks]

Hey Pebby.

I just switched to Arch Linux Arm yesterday. And had the same ugly grey scale image when booting kodi. I was about to give up when I stumbled upon your thread.
After finding a link to this thread: http://archlinuxarm.org/forum/viewtopic.php?f=45&t=7068 I created a uEnv.txt only containing this:

$this->bbcode_second_pass_code('', 'video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=16')

And now it looks just fine. Now I only have to get my damn remote working and It's back to watching videos^^

BTW: I installed using the guide on the arch linux arm site without the mainline kernel (using 3.10.17-5 wandboard kernel) and kodi-imx. That's pretty much it. hope that helps

[Peedy]

Well TNX for your Info, but I had this line together with additional important options for using F2FS on a separate root partition.

But today ... a little Flash stroke between my Ears .... )

after researching via dmesg for additional kernel options ... the video-part wasn't present ... what the ...???

O.K. now after a simple modify, the snippet looks like:

$this->bbcode_second_pass_code('', 'mmcroot=/dev/mmcblk0p2 rw
mmcrootfstype=f2fs rootwait fixrtc
optargs= video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=16 elevator=noop consleblank=0 vt.global_cursor_default=0 audit=0 splash')

And ... quel surprise ... it appears in the kernel args ...
After firing up Kodi my picture is better than TECHNICOLOR! )


Well, TNX to all written comments!

So long ... Peedy