Intel's Newest Linux Driver Is For Radio Frequency Interference Mitigation

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • phoronix
    Administrator
    • Jan 2007
    • 67391

    Intel's Newest Linux Driver Is For Radio Frequency Interference Mitigation

    Phoronix: Intel's Newest Linux Driver Is For Radio Frequency Interference Mitigation

    Adding to the new features coming for Linux 5.11, the Intel "RFIM" driver has been queued up as the company's latest open-source driver. The RFIM driver tweaks the DDR memory rates and fully integrated voltage regulator stemming if believed to be causing WiFi/5G interference...

    Phoronix, Linux Hardware Reviews, Linux hardware benchmarks, Linux server benchmarks, Linux benchmarking, Desktop Linux, Linux performance, Open Source graphics, Linux How To, Ubuntu benchmarks, Ubuntu hardware, Phoronix Test Suite
  • cl333r
    Senior Member
    • Oct 2009
    • 2309

    #2
    Wow I didn't know 5G is so feeble, sounds like an April 1st joke.

    Comment

    • StefanBruens
      Senior Member
      • Feb 2014
      • 157

      #3
      Originally posted by cl333r View Post
      Wow I didn't know 5G is so feeble, sounds like an April 1st joke.
      Everything HF is so feeble. Signals reaching the Antenna can be as low as ~ -100dBm, that is 0.1 Picowatt, and it still works. The onboard power regulators are handling several watts, and although only a small part is radiated keep in mind it is a few centimeters away from your radio modules.

      E.g. USB 3.0 Gen 1 (5GBit/s) is known to heavily interfere with WLAN.

      Comment

      • lowflyer
        Senior Member
        • Aug 2013
        • 922

        #4
        uuuuh.. This may fuel interest (or perhaps it shows a spike of interest) in air-gap hacking.

        Comment

        • JustRob
          Phoronix Member
          • Jul 2017
          • 101

          #5
          In other news hackers develop new side channel attack utilizing cellular WiFi to disrupt servers

          Comment

          • Teggs
            Senior Member
            • Jun 2018
            • 440

            #6
            Or you could shield the emission source.

            Comment

            • stormcrow
              Senior Member
              • Jul 2017
              • 1520

              #7
              Originally posted by Teggs View Post
              Or you could shield the emission source.
              Good luck doing that when the memory controller and radio are on the same chip. I have a similar problem with a particular laptop that has an integrated Bluetooth and Wifi NIC on the same module. Wifi interferes with the Bluetooth side making it unusable when Wifi is using 2.4 GHz.

              Comment

              • ThoreauHD
                Senior Member
                • Jul 2016
                • 470

                #8
                This sounds like a hardware design issue. If it was physically segmented/shielded there would be no need to gimp the power to everything else. EMI blocking is college level basic computing design. Unless there is some harmonic waveform colliding issue, but that doesn't sound like what this is.

                I think I'll be staying away from those architectures in the future.

                Comment

                • milkylainen
                  Senior Member
                  • Mar 2012
                  • 1106

                  #9
                  I'll play along with this. Intel hardware? Severe dysfunction? Naaah?
                  Now visualize my totally surprised face expression right now...

                  Comment

                  • vladpetric
                    Senior Member
                    • Oct 2014
                    • 516

                    #10
                    Originally posted by StefanBruens View Post

                    Everything HF is so feeble. Signals reaching the Antenna can be as low as ~ -100dBm, that is 0.1 Picowatt, and it still works. The onboard power regulators are handling several watts, and although only a small part is radiated keep in mind it is a few centimeters away from your radio modules.

                    E.g. USB 3.0 Gen 1 (5GBit/s) is known to heavily interfere with WLAN.
                    "Welcome to the world of analog EE, software people"

                    Comment

                    Working...
                    X