Comment 24 for bug 1970495
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| Valentijn Sessink (valentijn) wrote | #24 |
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My Thinkpad X1 gen 6 with Ubuntu 22.04, Lenovo 40AJ dock with 4K LG monitor with DP cable, will sometimes just show 2 or 4 lines with "DPCD read on addr 0x4b0 for 1 bytes NAKed", after which the system will just continue to work. But sometimes the "1 bytes NAKed" messages just keep running - which is when the session will crash, eventually.
If I connect the dock with the laptop LCD on, the "1 bytes NAKed" will freeze the LCD. When I'm fast enough to disconnect the DP cable, the LCD unfreezes. However, reconnecting the DP will re-freeze the LCD.