Hi all. I have a ThinkBook 14 IML 20RV with BIOS CJCN27WW and kernel 5.3.0-59. If I add "i2c_designware_core.dyndbg=+p i2c-hid.debug=1" to the boot parameters then this appears in dmesg:
[ 78.109188] i2c_designware i2c_designware.0: Standard Mode HCNT:LCNT = 926:1079 [ 78.109190] i2c_designware i2c_designware.0: Fast Mode HCNT:LCNT = 191:345 [ 78.109192] i2c_designware i2c_designware.0: SDA Hold Time TX:RX = 50:1 [ 78.109193] i2c_designware i2c_designware.0: Bus speed: Standard Mode [ 78.110181] i2c_hid i2c-ELAN0632:00: i2c-ELAN0632:00 supply vdd not found, using dummy regulator [ 78.110190] i2c_hid i2c-ELAN0632:00: i2c-ELAN0632:00 supply vddl not found, using dummy regulator [ 78.110208] i2c_designware i2c_designware.0: i2c_dw_xfer: msgs: 1 [ 78.110226] i2c_designware i2c_designware.0: enabled=0x1 stat=0x10 [ 78.110331] i2c_designware i2c_designware.0: enabled=0x1 stat=0x750 [ 78.110337] i2c_designware i2c_designware.0: i2c_dw_handle_tx_abort: slave address not acknowledged (7bit mode) [ 78.110899] elan_i2c i2c-ELAN0632:00: i2c-ELAN0632:00 supply vcc not found, using dummy regulator [ 78.110906] i2c_designware i2c_designware.0: i2c_dw_xfer: msgs: 1 [ 78.110923] i2c_designware i2c_designware.0: enabled=0x1 stat=0x10 [ 78.111029] i2c_designware i2c_designware.0: enabled=0x1 stat=0x750 [ 78.111036] i2c_designware i2c_designware.0: i2c_dw_handle_tx_abort: slave address not acknowledged (7bit mode) Hope this is relevant information -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1853277 Title: Lenovo ThinkBook 14-IML Touchpad not showing up in /proc/bus/input/devices To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1853277/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
