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  3. Aren't USB-C plugs meant to be symmetrical?

Aren't USB-C plugs meant to be symmetrical?

Scheduled Pinned Locked Moved The Lounge
lampquestionworkspace
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  • C Chris Maunder

    I've optimised my monitor / mouse / keyboard / zoom camera / phone charger / other phone charger / watch charger / headphone charger / zoom lamp setup so it's all neatly cabled to the back of my monitor. To do this I needed a USB-C extension cable. It mostly worked. Except for the mouse. OK: everything except the mouse. I tested the plugs, I swapped things in and out, I checked the mouse worked when plugged into the laptop directly. Nothing worked. Until I unplugged the USB-C extension cord, twisted it 180 degrees, and plugged it back in. Now it works. This makes no sense to me.

    cheers Chris Maunder

    B Offline
    B Offline
    Bruce Patin
    wrote on last edited by
    #17

    Broken wire

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    • W Wizard of Sleeves

      You have to align the quantum phase interface with the nearest zodiacal node.

      Nothing succeeds like a budgie without teeth.

      J Offline
      J Offline
      JP Reyes
      wrote on last edited by
      #18

      Oh that sounded like it came right out of the ol' SpaceQuest game series :laugh: (so many headaches too to get perfect MIDI music out of them)

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      • C Chris Maunder

        I've optimised my monitor / mouse / keyboard / zoom camera / phone charger / other phone charger / watch charger / headphone charger / zoom lamp setup so it's all neatly cabled to the back of my monitor. To do this I needed a USB-C extension cable. It mostly worked. Except for the mouse. OK: everything except the mouse. I tested the plugs, I swapped things in and out, I checked the mouse worked when plugged into the laptop directly. Nothing worked. Until I unplugged the USB-C extension cord, twisted it 180 degrees, and plugged it back in. Now it works. This makes no sense to me.

        cheers Chris Maunder

        U Offline
        U Offline
        User 2893688
        wrote on last edited by
        #19

        It makes sense if it was dirty... which meant you overloaded the bandwidth but it worked with everything, EXCEPT THE MOUSE.

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        • W Wizard of Sleeves

          You have to align the quantum phase interface with the nearest zodiacal node.

          Nothing succeeds like a budgie without teeth.

          U Offline
          U Offline
          User 2893688
          wrote on last edited by
          #20

          You forgot to tangled the Quantum Capacitors and cool the Delithium Crystals. "I canna' change the laws of physics." -- Montgomery "Scotty" Scott

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          • M megaadam

            Ah you youngsters. I never had such problems with RS-232.

            "If we don't change direction, we'll end up where we're going"

            J Offline
            J Offline
            jmussetter
            wrote on last edited by
            #21

            As someone who deals with RS232, still, on a very normal basis, don't you remember the null-modem pin swaps? I still carry several DB9 null-modem adapters around with me in my backpack for testing. There is even a meme about it... something along the lines of "don't panic! swap pins 2 and 3 and carry on!" or something. So yes, even rs232 can be "backwards" (unfortunately).

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            • J jmussetter

              As someone who deals with RS232, still, on a very normal basis, don't you remember the null-modem pin swaps? I still carry several DB9 null-modem adapters around with me in my backpack for testing. There is even a meme about it... something along the lines of "don't panic! swap pins 2 and 3 and carry on!" or something. So yes, even rs232 can be "backwards" (unfortunately).

              T Offline
              T Offline
              trønderen
              wrote on last edited by
              #22

              Yeah, I think we had seven different ways of making null modem cables... That was including those on a full 25-pin RS232-plug with all the signals. On the 9-pin connectors, there were not that many alternatives. My experience with them is primarily as a college lecturer: If you ask our students who were CS students in the first half of the 1990, they still remember one single group project: That of implementing a (simplified) Kermit protocol between two PCs, after soldering up a null modem cable. This was their first encounter with multi-process (and even multi-machine) software debugging: It gave them the greatest frustrations of their study years, but also their greatest learning experience.

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              • M megaadam

                Ah you youngsters. I never had such problems with RS-232.

                "If we don't change direction, we'll end up where we're going"

                A Offline
                A Offline
                abusaad
                wrote on last edited by
                #23

                Remember the null-modem?

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                • C Chris Maunder

                  I've optimised my monitor / mouse / keyboard / zoom camera / phone charger / other phone charger / watch charger / headphone charger / zoom lamp setup so it's all neatly cabled to the back of my monitor. To do this I needed a USB-C extension cable. It mostly worked. Except for the mouse. OK: everything except the mouse. I tested the plugs, I swapped things in and out, I checked the mouse worked when plugged into the laptop directly. Nothing worked. Until I unplugged the USB-C extension cord, twisted it 180 degrees, and plugged it back in. Now it works. This makes no sense to me.

                  cheers Chris Maunder

                  M Offline
                  M Offline
                  maze3
                  wrote on last edited by
                  #24

                  did you try a different cable? If different cable works: then cable might not be properly wired up. If different cable has same issue when flipping: the mouse might not be wired to handle the data and power on the flipped pins. USB-a only has 4 pins. USB-c has 24, 12 doubled. The mouse likely switched from handle micro usb to C, so to save time and a penny cut the need to fully wire up all the pins

                  C 1 Reply Last reply
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                  • C Chris Maunder

                    I've optimised my monitor / mouse / keyboard / zoom camera / phone charger / other phone charger / watch charger / headphone charger / zoom lamp setup so it's all neatly cabled to the back of my monitor. To do this I needed a USB-C extension cable. It mostly worked. Except for the mouse. OK: everything except the mouse. I tested the plugs, I swapped things in and out, I checked the mouse worked when plugged into the laptop directly. Nothing worked. Until I unplugged the USB-C extension cord, twisted it 180 degrees, and plugged it back in. Now it works. This makes no sense to me.

                    cheers Chris Maunder

                    M Offline
                    M Offline
                    Martin ISDN
                    wrote on last edited by
                    #25

                    it's a safe passage so they can once again reintroduce a new plug

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                    • M maze3

                      did you try a different cable? If different cable works: then cable might not be properly wired up. If different cable has same issue when flipping: the mouse might not be wired to handle the data and power on the flipped pins. USB-a only has 4 pins. USB-c has 24, 12 doubled. The mouse likely switched from handle micro usb to C, so to save time and a penny cut the need to fully wire up all the pins

                      C Offline
                      C Offline
                      Chris Maunder
                      wrote on last edited by
                      #26

                      I flipped it. It worked. I moved on :)

                      cheers Chris Maunder

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