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Old 07-03-2016, 09:23 AM   #1
Registered: Jan 2013
Location: France
Distribution: Slackware 14.1 32 bits
Posts: 211

Rep: Reputation: 56
Exclamation [UEFI] Keyboard layout messed up

Hi guys,

I just got my hand on the shinny new Slack ISO.

My problem is the following :

When booting the ISO in UEFI mode and going to the kernel choice prompt, the keyboard layout is completely messed up and doesn't match any known layout.

Most of the keys of the keyboard wont print any character or print gibberish instead of the actual letter or number...

My system make and model :

Dell Latitude E6440
i7 4600M
Latest BIOS installed

When booting in Legacy/CSM Mode (aka Bios mode) everything is just fine.

The USB pendrive was formatted with Rufus, a neat Windows program for making bootable USB devices.

Old 07-03-2016, 02:35 PM   #2
Registered: Aug 2005
Location: The Glorious People's Republic of Austin
Posts: 156

Rep: Reputation: 26
I had the same model laptop as my workstation, except with the I5 processor. If I remember correctly, you can get the keyboard working by enabling the legacy mode boot option and then selecting the UEFI cdrom boot option from the F12 boot prompt. Alternatively, a USB keyboard will work.

I'm not sure how the keymapping gets so screwed up in UEFI mode, but it seems to be an endemic problem with Dell laptops. I ran into the same problem on my new work machine too!
Old 07-16-2016, 05:08 AM   #3
Registered: Jan 2013
Location: France
Distribution: Slackware 14.1 32 bits
Posts: 211

Original Poster
Rep: Reputation: 56
Yep, that did the trick.

Thanks dude.
Old 03-20-2017, 01:12 AM   #4
Registered: Mar 2013
Location: Truckee, California, United States
Distribution: Slackware, OpenBSD, openSUSE, Android
Posts: 93

Rep: Reputation: 35
I'm having similar issues with Slackware64-14.2's installer (and Alien Bob's live Slackware64-current build, specifically the KDE4 variety, latest from his site as of today) and a Dell Precision 7510. The GRUB menu works fine when booting through UEFI, but in Linux-land the keyboard bugs out; in the 14.2 installer, keypresses produce gibberish or completely-off-the-mark characters, while in the -current liveusb, pressing any key while at KDM's login screen causes a completely different key to behave as if it's being held down. Flashing the latest firmware from Dell's site had no impact.

Everything keyboard-wise works perfectly fine when doing a legacy/non-UEFI boot of the USB stick I'm using, both for the 14.2 installer and the -current liveusb. Enabling Legacy Boot Mode doesn't seem to fix the UEFI boot for me. Kind of a bummer, since I was hoping to play around with this machine's support for custom Secure Boot keys, but I guess I can chug along with legacy booting for now.


boot, keyboard, layout, uefi, usb

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