Hi everybody! I am trying to install Debian Bookworm on a HP 250 g9, which includes a RTL8822CE wireless network adapter. Unfortunately I am experiencing very unstable connection. I started with a default installation (with Gnome and NetworkManager) and the connection dropped quite often, just after a few minutes. Usually when the connection dropped dmesg reported some AER errors. I reported the issue at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1037145. Then I attempted in several way to improve the situation (so far without much luck): - I added pcie_aspm=off to the Linux command line. The AER errors disappeared, but the connection is still unstable; - I tried to force bssid in NetworkManager, but I did not notice any visible change in stability; - I upgraded BIOS and all software for this laptop as provided by HP; - I tried to upgrade Linux and related firmware from Debian unstable. Initially I updated to Linux package 6.3.7-1 and firmware 20230404-1, and the stability degraded a lot (i.e., the connection hangs after just a few seconds). Then I upgraded firmware to 20230505-1 and now the system is quite stable at the beginning (i.e., the connection is stable for a few minutes) and then it becomes very unstable after the first issue (i.e., the connection hangs after just a few seconds). I noticed some correlation between system suspend and the first issue, but sometimes the connection just hangs, even if the system does not attempt to suspend. Executing "rmmod rtw88_8822ce rtw88_8822c rtw88_pci rtw88_core" and then "modprobe rtw88_8822ce" does not seem to solve the issue, instead the connection is very unstable after that; - I tried to set disable_aspm=1 and disable_msi=1 for rtw88_pci. I tried both options individually and together. Some additional errors appear in dmesg, such as `rtw_8822ce 0000:03:00.0: failed to do dpk calibration` when I use disable_aspm=1 and `rtw_8822ce 0000:03:00.0: firmware failed to report density after scan` + `rtw_8822ce 0000:03:00.0: failed to get tx report from firmware` when disable_msi=1. When setting both options together the situation seems worse. When set individually it seems very similar to not setting any option; - I tried using drivers from https://github.com/lwfinger/rtw88/, but I was not able to load the driver, since it failed to load the firmware (I have reported the issue at ihttps://github.com/lwfinger/rtw88/ssues/150). What can I do to better identify the issue and possibly solve it? Best regards, Giulio
