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    Laptop USB-C Alt Mode

    Pi CM5
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    • A
      anernest last edited by

      I believe I saw somewhere that the laptop supports DP Alt via USB-C. I have a small 7in USB-C monitor (LESOWN) that does not display anything when plugged into the Laptop, although the touch screen on the 7in monitor does move the cursor on the main laptop screen. Is there a power limit on the USB-C port? The laptop is plugged into a 12V 3A power supply. I Have a similar HDMI monitor that works with the laptop if I power it separately.

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        george @anernest last edited by

        @anernest Please upload a copy of dmesg information. Thank you.

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          anernest @george last edited by

          @george The problem appears specific to the LESOWN Type C monitor dmesg.txt, although this monitor works fine with other SBC (Orange Pi 5 Plus). Resolution of this issue is not important for me since the laptop screen displays fine on another Type C monitor I have.
          On a slightly separate topic, does the laptop USB-C port support DP MST? I would like to use the laptop as my daily driver, with 2 DP and 1 HDMI monitors on my desk.

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            george @anernest last edited by

            @anernest
            Sorry, the TYPEC interface of RK3588 does not support DP MST mode. You can expand up to one HDMI and one TYPEC display terminal, and with the machine's own eDP screen, you can achieve three different displays. If you need to implement two fully functional TYPEC interfaces and two HDMI terminals, you can consider customizing a CM5 core board motherboard. If you have some hands-on ability, we are willing to cooperate with you to achieve it. Thank you for your support of Coolpi.

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              anernest @george last edited by

              @george I'm afraid my hands-on capabilities are limited.'

              Is there a trick to enabling the HDMI port? I can drive a monitor on the Type C, but not the HDMI.|

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                george @anernest last edited by

                @anernest
                Refer to the following document to provide EDID information and demesg information for inserting and removing HDMI.
                https://www.cool-pi.com/topic/296/how-to-drive-non-standard-resolution-hdmi-displays?_=1701475254750

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                  anernest @george last edited by

                  @george said in Laptop USB-C Alt Mode:

                  @anernest
                  Refer to the following document to provide EDID information and demesg information for inserting and removing HDMI.
                  https://www.cool-pi.com/topic/296/how-to-drive-non-standard-resolution-hdmi-displays?_=1701475254750

                  My apologies @george , I kept looking in the CM5 Laptop thread and not here for an answer, when you had already answered here, immediately. I will check this out today.

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                    anernest @george last edited by

                    @george said in Laptop USB-C Alt Mode:

                    @anernest
                    Refer to the following document to provide EDID information and demesg information for inserting and removing HDMI.
                    https://www.cool-pi.com/topic/296/how-to-drive-non-standard-resolution-hdmi-displays?_=1701475254750

                    • When I plug a desktop monitor in, the edid.bin file is empty and the monitor continues to act as if it has not been plugged in.
                    • So I plugged the portable monitor in, and the edid.bin remained empty, even though the monitor woke up and displayed the desktop.
                    • Below is the dmesg output from the time I plugged the portable monitor in (I imagine the same i2c read error would be happening with the desktop monitor):
                    [55894.022488] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_disable] Crtc atomic disable vp0
[55922.073783] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.099121] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.124563] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.150090] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.175693] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.181007] dwhdmi-rockchip fde80000.hdmi: failed to get edid
[55922.201317] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.226965] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.252690] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.278239] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.303637] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.308948] dwhdmi-rockchip fde80000.hdmi: failed to get edid
[55922.390272] dwhdmi-rockchip fde80000.hdmi: use tmds mode
[55922.390290] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] Update mode to 1920x1080p60, type: 11(if:800) for vp0 dclk: 148500000
[55922.390313] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] dclk_out0 div: 0 dclk_core0 div: 2
[55922.390317] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_enable] set dclk_vop0 to 148500000, get 148500000
[55922.407006] rockchip-hdptx-phy-hdmi fed60000.hdmiphy: hdptx_ropll_cmn_config bus_width:16a8c8 rate:1485000
[55922.407270] rockchip-hdptx-phy-hdmi fed60000.hdmiphy: hdptx phy pll locked!
[55922.414228] dwhdmi-rockchip fde80000.hdmi: final tmdsclk = 148500000
[55922.414247] dwhdmi-rockchip fde80000.hdmi: don't use dsc mode
[55922.414249] dwhdmi-rockchip fde80000.hdmi: dw hdmi qp use tmds mode
[55922.414253] rockchip-hdptx-phy-hdmi fed60000.hdmiphy: bus_width:0x16a8c8,bit_rate:1485000
[55922.414438] rockchip-hdptx-phy-hdmi fed60000.hdmiphy: hdptx phy lane locked!
[55922.467217] usb 5-1: new full-speed USB device number 4 using xhci-hcd
[55922.507150] dwhdmi-rockchip fde80000.hdmi: use tmds mode
[55922.561497] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.586994] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.608497] usb 5-1: New USB device found, idVendor=1a86, idProduct=e5e3, bcdDevice= 0.00
[55922.608504] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[55922.608507] usb 5-1: Product: TeNizo_R7Series_TC
[55922.608510] usb 5-1: Manufacturer: TeNizo
[55922.612274] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.622167] input: TeNizo TeNizo_R7Series_TC as /devices/platform/usbdrd3_1/fc400000.usb/xhci-hcd.4.auto/usb5/5-1/5-1:1.0/0003:1A86:E5E3.0008/input/input14
[55922.622551] hid-multitouch 0003:1A86:E5E3.0008: input,hidraw4: USB HID v1.00 Device [TeNizo TeNizo_R7Series_TC] on usb-xhci-hcd.4.auto-1/input0
[55922.637682] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.663245] dwhdmi-rockchip fde80000.hdmi: i2c read err!
[55922.668566] dwhdmi-rockchip fde80000.hdmi: failed to get edid
[55924.770530] dwhdmi-rockchip fde80000.hdmi: use tmds mode
[55924.787232] dwhdmi-rockchip fde80000.hdmi: use tmds mode
[55924.803857] dwhdmi-rockchip fde80000.hdmi: use tmds mode
[55955.039625] dwhdmi-rockchip fde80000.hdmi: use tmds mode
[55955.293468] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_disable] Crtc atomic disable vp2
[55955.322826] dwhdmi-rockchip fde80000.hdmi: use tmds mode
[55955.373026] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_disable] Crtc atomic disable vp0
[55955.423668] rockchip-vop2 fdd90000.vop: [drm:vop2_wait_power_domain_off] *ERROR* wait pd7 off timeout power_ctrl: 0x7f
[55955.440413] rockchip-vop2 fdd90000.vop: [drm:vop2_crtc_atomic_disable] *ERROR* unexpected power on pd7
[55955.449779] dwhdmi-rockchip fde80000.hdmi: use tmds mode
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