Rudraksh Pareek DelusionalOptimist

## cs35l41_spi.md

      
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                lamperez
                / cs35l41_spi.md
            
            
              Last active
              June 23, 2024 20:06
            
              
                CS35L41 amplifiers in an ASUS Zenbook on linux
              
          
    Asus Zenbook UX3402 speakers on Linux

Important
THIS IS NOW OBSOLETE WITH KERNEL VERSIONS ≥ 6.7.0
A recent announcement in the kernel mail list by Cirrus developers will solve the problem described here. Therefore, the proposed solutions will be soon obsolete.
See this comment (thanks, @flukejones, for the tip).

I got the speakers working on my Asus Zenbook 14 OLED UX3402, the one with Intel CPU and the two CS35L41
audio amplifiers connected over SPI (not the UM3402YA, with AMD and I²C). The amplifiers are supported by the snd_hda_scodec_cs35l41 module in recent kernel versions, but they require some model-specific configuration paramaters, that should be provided by

  
## self-signed-certificate-with-custom-ca.md

      
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                fntlnz
                / self-signed-certificate-with-custom-ca.md
            
            
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              June 25, 2024 12:19
            
              
                Self Signed Certificate with Custom Root CA
              
          
    Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!
openssl genrsa -des3 -out rootCA.key 4096