rockowitz

Thank you for the detailed report. Unfortunately, I don't have very good news.   The I2C communication with the monitor is garbled.  Some monitors are just dirty.   I'll add the HP...

Do let me know what you find with the logic analyzer.   I would not be surprised to find that the tolerances are marginal - good enough for the Windows driver,...

Have you tried connecting without the dock, using  HDMI? Please send the output of "sudo ddcutil interrogate" as an attachment. On 10/5/20 6:40 PM, Cornelius Riemenschneider wrote: > > Hi,...

i2c failure on recent docking stations (i.e. using DisplayPort MST) is a well known problem.   See the bug report that I submitted 3 years ago. If you scroll to the...

Commit adb48b26985686f93f20ca71c16c067d790e7af3 (drm/dp_mst: Support remote i2c writes) is not in kernel release 5.9.1. More specifically, it is not currently in - branch linux-5.9.y at git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git The commit is found in:...

The changes to file drm_dp_mst_topology.c are in just released kernel branch 5.10.

Please execute **ddcutil environment --verbose** as root, and submit the output as an attachment. Please describe your hardware and software environment. If you are using an old version of dccutil,...

Hangs like this have been seen before. They are quite elusive to diagnose. See #159 #131 #86. Are you running ddcutil in a script? Try running **ddcutil --trace i2c --tid...

Your script should pose no problems. The concern would be if multiple ddcutil calls occured in succession. I should have been clearer. I need to see the output of **ddcutil...

@sierratango88 @Rashad-707 Having returned from vacation and now having good internet access, I've taken another look at hangs and other failures with the amdgpu driver. What they have in common...