Hi Tommy, On Mon, 25 Jul 2022 18:00:55 -0700, Tommy Lee wrote: > Hi Linux-i2c, You got the list address wrong, I'm fixing it (it's a dash, not an underscore). > My platform is ASUS Vivobook e203 running Ubuntu 22.04 LTS. The i2c-tools > src package I installed is 3.1.2. The make command works. But the > "i2cdetect -l" execution gave me the following alert. I discovered that > the /proc/bus/i2c used by the 3.1.2 gather_i2c_busses() has been moved > to /sys/bus/i2c in Ubuntu22.04 LTS. /proc/bus/i2c has not been replaced by /sys/bus/i2c in Ubuntu 22.04. It's a changed that happened almost 2 decades ago. Even kernel 2.6.0 had it already. > I replaced /proc/bus/i2c with > /sys/bus/i2c in gather_i2c_busses() and replaced adapters[count].name with > adapters->nr. Running tools/i2cdetect shows 0 on adapters->nr. That change makes no sense at all, so it's not surprising it doesn't work. The problem is that you are using i2c-tools-3.1 which is a legacy branch that can only work with very old kernels. It is in maintenance mode, hasn't received any development since 8 years and really nobody should be using it any longer. Why don't you just use i2c-tools version 4.3 which is already packaged in your distribution? -- Jean Delvare SUSE L3 Support