[Matt Devo]

I just bought a 55inch samsung UHD 4k smart tv

It refused to recognise my chromebox

When I connect chromebox to my old tv (32 in non smart), then connect the HDMI to the new TV, it works.

But if I turn off the chromebox, it doesn't recognise it again.

How can I fix this, please help me before I go apeshit on my new tv

I suspect it's the same issue I ran into with a 4K visio set, where it advertises accepting 1080p 120Hz input but actually doesn't. You can test this by booting on the new TV, then connecting via ssh and checking the output resolution / refresh rate via xrandr --props, and then manually set it to 1080p60 (via xrandr, not sure of exact command) if it's not already. Might be worth popping on IRC to get some help there

[visiter555]

Hi Matt,

First time Dell Celeron ChromeBox owner

So far so good....thanks for your work.

[calcio1]

I just bought a 55inch samsung UHD 4k smart tv

It refused to recognise my chromebox

When I connect chromebox to my old tv (32 in non smart), then connect the HDMI to the new TV, it works.

But if I turn off the chromebox, it doesn't recognise it again.

How can I fix this, please help me before I go apeshit on my new tv

I suspect it's the same issue I ran into with a 4K visio set, where it advertises accepting 1080p 120Hz input but actually doesn't. You can test this by booting on the new TV, then connecting via ssh and checking the output resolution / refresh rate via xrandr --props, and then manually set it to 1080p60 (via xrandr, not sure of exact command) if it's not already. Might be worth popping on IRC to get some help there

Matt do you mean ssh into tv or chromebox?

EDIT I can't seem to ssh into TV and I don't know the user name / password for openelec

[PunchDown]

I must have done something wrong following the instructions of the OP. I was attempting to do a standalone openelec install. After creating the recovery usb, I couldn't get past the boot screen "Booting from hard disk...". Can't get Ctrl-D to work. Ditto for hitting Esc. Tried entering recovery, but get stuck in the same spot. I created a recovery usb using the Google utility, but there's no way to get the Chromebox to look at the USB. It only hangs on the same screen "Booting from hard disk..."
Any suggestions?
Many thanks!

Did you ever find a solution? I'm having the same issue. Thanks.

[Matt Devo]

Hi Matt,

First time Dell Celeron ChromeBox owner

So far so good....thanks for your work.

Thanks!

Matt do you mean ssh into tv or chromebox?

EDIT I can't seem to ssh into TV and I don't know the user name / password for openelec

root/openelec. It's on their wiki

Did you ever find a solution? I'm having the same issue. Thanks.

It's either an issue with your keyboard or USB stick (as per the wiki). Pressing anything other than ESC as directed is sure to bollocks things up. The recovery button and CTRL-D/L have no function once you've flashed my custom firmware.

[calcio1]

Matt this is the output from xrandr (with kodi viewable on my tv). How should i get it to default to 1080px60?

also, does this mean i can't view 4k content from chromebox?

thanks

Code:

# xrandr --props
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1872mm x 1053mm
    EDID:
        00ffffffffffff004c2d000c01000001
        2a180103807944780a23ada4544d9926
        0f474abdef80714f81c0810081809500
        a9c0b300010104740030f2705a80b058
        8a00501d7400001e023a801871382d40
        582c4500501d7400001e000000fc0053
        414d53554e470a2020202020000000fd
        00184b0f511e000a2020202020200110
        020340f153df101f041305142021225d
        5e62636407160312290907071507503d
        07c08301000076030c002100801e21d0
        880102030401400fff50608090e2000f
        011d80d0721c1620102c2580501d7400
        009e662156aa51001e30468f3300501d
        7400001e000000000000000000000000
        00000000000000000000000000000006
    Broadcast RGB: Automatic
        supported: Automatic, Full, Limited 16:235
    audio: auto
        supported: force-dvi, off, auto, on
   3840x2160     30.00 +  25.00    24.00    29.97    23.98  
   4096x2160     24.00    23.98  
   1920x1080     60.00*   50.00    59.94    30.00    25.00    24.00    29.97    23.98  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.88  
   1600x900      59.98  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1366x768      59.79  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      59.97    60.00    50.00    59.94  
   1440x576i     50.00  
   1024x768      75.08    70.07    60.00  
   1440x480i     60.00    59.94  
   832x624       74.55  
   800x600       72.19    75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
DP1 disconnected (normal left inverted right x axis y axis)
    Broadcast RGB: Automatic
        supported: Automatic, Full, Limited 16:235
    audio: auto
        supported: force-dvi, off, auto, on
HDMI2 disconnected (normal left inverted right x axis y axis)
    Broadcast RGB: Automatic
        supported: Automatic, Full, Limited 16:235
    audio: auto
        supported: force-dvi, off, auto, on
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

[Matt Devo]

Matt this is the output from xrandr (with kodi viewable on my tv). How should i get it to default to 1080px60?

also, does this mean i can't view 4k content from chromebox?

thanks

so, the output of xrandr is telling us that 3840x2160p30 is the default resolution (indicated by the +), which apparently your TV doesn't like (at least on that particular input - some 4K TVs are picky about that). 4K 30Hz output is pretty crappy for the GUI, so outputting 1080p60 is actually better unless you have h264 4K content you want to play.

To set the output to 1080p60 on startup, create an autostart.sh script containing the following:

Code:

xrandr --output HDMI1 --mode 1920x1080

[desperado77]

Hi,

Did anyone tried the Chromebox DiplayPort 1.2 output to HDMI 2.0 TV input ?
As it's the only way to have 2160p60.

Thanks

[Matt Devo]

Hi,

Did anyone tried the Chromebox DiplayPort 1.2 output to HDMI 2.0 TV input ?
As it's the only way to have 2160p60.

Thanks

There's no adapter from DisplayPort 1.2 to HDMI 2.0 which utilizes MST (multi-stream transport, which effectively uses 2 displays as one), so there's no way to get 2160p60 out of the Chromebox via HDMI, period

[desperado77]

Hi Matt,

Are all the videos up-scaled to the resolution that is indicated by the '+' in xrandr (native resolution)?

Thanks

[Matt Devo]

Hi Matt,

Are all the videos up-scaled to the resolution that is indicated by the '+' in xrandr (native resolution)?

Thanks

They are scaled to the selected output resolution, up or down. The native resolution of the display doesn't factor in at all

[desperado77]

Is there a way to limit the GUI to 1080p60 and use the 2160p output resolution for videos ? like in raspberry pi

Bizlink announced DP 1.2 to HDMI 2.0 Adapter, but no retailer have this now.

Thanks

[Matt Devo]

Not that I'm aware of

[leo5111]

im dual booted with your script i tried the beta 5.95.3 dual boot how do i roll back to 5.08 thanks

[Matt Devo]

im dual booted with your script i tried the beta 5.95.3 dual boot how do i roll back to 5.08 thanks

Easiest way is to re-run the script (only have to do it once) and select the stable version instead