Please do not shout.
Apologies. I was trying to make it stand out, shouldv'e used bold instead.
I have never seen that before though my systems do not use the WL driver. Booting up base64 in VBox, the only blacklisted drivers are particular Broadcom drivers.
Here's something you might not know, but that might assist in the future. If you have enough RAM, when running live, go ahead and check for updates, then install everything and answer Y if presented (you will be asked because a VirtualBox update has been rolled out).
The updates will not be wasted because whatever system changes you make will be integrated when the installer is run, and for the Base ISO's, there is a switch to a more efficient driver stack which came out just after I finished building the ISO's. Where low level driver changes are concerned, a reboot is always the best policy, which is effected post install.
Desktop changes are not automatically integrated, there's a checkbox for that in the installer if you want to use it.
In my experience, desktop aberrations such as the display not "painting" the latest change are 75% related to drivers and on your particular laptop, you might be better off switching to the 4.09 LTS kernel, it will be better matched to your processors capabilities.
There's been all sorts of things going on. I've been playing with it all day and like I said it was my dad's daily driver laptop (for all that he only watches his youtube playlist on it), so when I got excited and installed the MX19.2_base iso on it and wiped the Lubuntu off it, he wasn't too pleased when it didn't work.
I have the broadcom bcm4322 wifi in it. Funny thing is during the live session, loading the 'wl' driver worked (that's why i got excited and installed it). My home networks and my phone hotspot were detected. After the install and subsequent restart, however, neither was working so I unloaded the 'wl' driver and loaded the b43. Bam! phone hotspot working but home wifi still not working. I blacklisted the other drivers and did all the updates followed by a reboot. Still no home wifi. Tried some of the suggestions in the other MXlinux threads and Ubuntu ones, watched Dolphins video on it, no joy.
The issue with the panel never came back. I must have reinstalled the iso about 7/8 times now, if not more. I've selected 'save desktop changes' during installation so I don't know why it removes the 'wl' driver after reboot. I found something here which might be of interest to you:
viewtopic.php?f=92&t=36348&start=30 (post #34) something about broadcom-sta-dkms package not being on the iso image.
You may be right about the kernels, although Lubuntu 20.04.1 is using the 5.4 kernel which works. For what it's worth, i ran it on VBox before putting on the compaq and it ran really well on my ThinkpadT410.
Also, the splash screen during the live session startup doesn't come up after installing. It would be nice to have that same 'quiet splasht splash' parameter permanent.
Anyway, i hope that's enough feedback for you.