this driver may have been the issue, it wasn't in the mkinitrds that was used earlier.

That was already in post #310 and then it did not boot.

Maybe uas or intel_xhci_usb_role_switch. Or the 10 secs wait.

It did boot.

let me rephrase, that cqhci driver wasn't included until slackware64-current was installed.
neither was the intel_xhci_usb_role_switch driver. My guess it was those two missing drivers causing the issue originally.

So what we learn from this? The installer could access the MMC disk both in 14.2 and current. I think it's because udevd in the installer was able to automatically load all the necessary modules. But udevd could not do the same in the installed system, because the modules were not there in the initrd image, because mkinitrd_command_generator.sh did not list them. The answer would be to automatically copy all those modules into the /boot/initrd-tree/lib/modules which are listed in the lsmod output in the installer. Those need not be modprobed manually in /boot/initrd-tree/load_kernel_modules, I guess, though, but udevd would load them if needed.

No it won't work on a standard install, did a check in a vm neither one of those drivers are in the 14.2 kernels.

Well, the only thing that's lacking is giving you both a lot of thanks. At last I have slackware on my laptop. I bought another one, an HP, with slackware on it and mechanical hard disk. I bought it because I was unhappy with only 32G in the "hard disk" (it has a 1TB hard disk). But it has numerical keypad which makes it bulky (too wide). Instead this Acer not only is less wide having no numerical keypad (which I never use) but the keyboard is American. The HP has a Spanish keyboard with a lot of keys. For instance the slash is above the 7 (seven). The most widely used key in the most uncomfortable position! And it has a powerful loudspeaker, so the bell character is clearly heard.

I'll never be able to thank you enough, guys. Good bye and best wishes.

6.2G available is not so bad!

You are sure it can't be done with 14.2? Once I know what the drivers are, why not make an initrd.gz that contains them and boot with the generic, as I am presently doing?

With 14.2 will give , same for the other module.
If you look in /usr/src/linux/drivers/mmc/host there is a cqhci file in -current but not in 14.2.

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But my initrd.gz contains the cqhci driver, isn't it? However during boot modprobe is run? Why?

That is because you have slackware64-current install, not 14.2

I mean booting 14.2.

I run alsamixer and it only has the master control. I move it to 100%. Now I play a movie with mplayer. And there is no sound! How could I begin to solve this problem? Perhaps this should go in a new thread?

EDIT: perhaps the other controls are muted. If I could make alsamixer to display them I could know. Why does alsamixer show the master control only?

In what post?