| 253 | ==== GW16157 Troubleshooting |
| 254 | |
| 255 | 1. Are you sure 24V is applied to the correct VIN pairs for the audio amplifier |
| 256 | 2. Are you sure the device tree overlay discussed in the above section has been applied? |
| 257 | 3. Can you see the audio codec on the I2C bus (bus 2, address 0x0a) with the example below: |
| 258 | {{{ |
| 259 | root@jammy-venice:~# i2cdetect -y 2 |
| 260 | 0 1 2 3 4 5 6 7 8 9 a b c d e f |
| 261 | 00: -- -- UU -- -- -- -- -- |
| 262 | 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| 263 | 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| 264 | 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| 265 | 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| 266 | 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| 267 | 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |
| 268 | 70: -- -- -- -- -- -- -- -- |
| 269 | root@jammy-venice:~# dmesg | grep sgtl |
| 270 | [ 6.643354] sgtl5000 2-000a: sgtl5000 revision 0x11 |
| 271 | [ 6.645677] sgtl5000 2-000a: Using internal LDO instead of VDDD: check ER1 erratum |
| 272 | |
| 273 | }}} |
| 274 | 4. Can you see the audio codec recognized without error in the dmesg boot logs, example below: |
| 275 | {{{ |
| 276 | root@jammy-venice:~# dmesg | grep sgtl |
| 277 | [ 6.643354] sgtl5000 2-000a: sgtl5000 revision 0x11 |
| 278 | [ 6.645677] sgtl5000 2-000a: Using internal LDO instead of VDDD: check ER1 erratum |
| 279 | |
| 280 | }}} |
| 281 | |