Bluetooth: L2CAP socket layer initialized Bluetooth: HCI device and connection manager initialized NET: Registered PF_BLUETOOTH protocol family Have tried with 6.0.7-060007-generic and still same output Bluetooth: Core ver 2.22 Lsusb: Bus 005 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) Have installed 5.17.1-051701-generic on Ubuntu 22.04.1 and still have the problem Often you can fix a dongle by commenting out something or submitting an one-liner. Just make the jump and learn, even if it's through hacks and experimentation it will help getting to the correct solution if you stick around. Be the change you want to see in the world, if everyone did what I did with the hardware they own everything would be fixed. I'm just a random Linux user doing it as a hobby after arriving at the same place, there is no ETA. I bought one of the Barrot ones that still don't work and ended up with a duplicate that worked out of the box already. I can't really justify buying a sack of random AliExpress dongles and wait months for them to arrive and cross my fingers so that the seller is kind enough to not swap the advertised PCB (which happened two months ago, getting specific controllers is crazy hard) just to submit more patches. Update: Hamish Blackall commented the following “ USB 3 ports are not recommended” That is worth noting.Well, it's fixed for all the dongles I have and the ones I bought just to fix more Linux kernel issues. The Lenovo notebook’s internal Bluetooth radio needs to be disabled to use the CSR 4 and probably any other USB Bluetooth Adapter. Windows 10 can’t operate two Bluetooth radios at the same time. (Solved) CSR 4.0 USB Adapter Won’t Install Once that was done, I rebooted the computer and reinstalled the CSR Bluetooth adapter. Then in Windows Device Manager, I selected “Show Hidden Devices” and removed any additional Bluetooth devices that are no longer being used. My second thought was there was another device interfering with the installation, so I removed my iPhone, Sharkk Boombox, and Amazon Tap. My initial thought was that maybe there was a driver needed after all, but my research told me that the CSR 4 USB Bluetooth adapter does not require any driver other than what is included with the Windows 10 operating system. Here we go, a simple task is now a project. A quick check-in Windows 10 device manager showed me the CSR 4.0 was installed, but there was an error message. Installing the CSR 4.0 USB Bluetooth Dongleīeing a Windows 10 computer, the Bluetooth adapter should have been plug and play, but unfortunately, that was not the case. My research on Amazon showed me that there were many USB Bluetooth 4.0 Dongles to choose from, and many seemed to be re-branded CSR 4.0, so I bought the one that was actually branded CSR 4.0 for about $12, and in two days, Amazon prime had it in my hands. Cambridge Silicon Radio CSR 4.0 USB Bluetooth Dongle I had to solve this problem once and for all.įrustrated, I headed to Amazon and set out to find a new Bluetooth 4.0 USB dongle. I recently had a renewed interest in training courses, so I bought an awesome set of Hiearcool L-1 Bluetooth Headphones. Until a few days ago, I lived with this problem because it was not a big deal. Devices would stop working, and I would need to remove them from the system and add them again along with several other tap dances to keep things working. Unfortunately, the Bluetooth 3.0 on the Thinkpad was flaky. Life was good until about two years ago when I decided I wanted to regularly pair my Amazon Tap, Sharkk Boombox, and a pair of Jabra Bluetooth earbuds to the system. When it was new from the factory, I installed a Samsung 500Gb SSD to eliminate the weakest link, a Western Digital mechanical hard drive. I have an older Lenovo Thinkpad W520 notebook computer running Windows 10 Professional that, for the most part, has been an ultra-reliable workhorse.
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