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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

    M Offline
    M Offline
    megaadam
    wrote on last edited by
    #16

    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"

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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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