Feedback on the Dell Vostro 5481 - Bucky V5 14

Asked by Ioan Cristea on 2019-02-08


I have a problem with my dell vostro 5481.
The fingerprinter is not seen by the system in lsusb appear the device id 27c6:538c, with no manufacturer.
In the users settings nothing appear about register fingerprint.

Also deep sleep not working.
It enter in sleep but not wake-up (the laptop restart).
I have a OEM ubuntu instalation with latest oem kernel.

Against this is ubuntu certified hardware, some things not working.

Please help me with that problems.

EDIT: resume after suspend problem
After many tests I discover that my laptop OEM Ubuntu 18.04 comes with sleep mode config as: mem_sleep_default=deep in /etc/default/grub, and when I delete this config, it works.
I want to have deep sleep on, because of low consumption in sleep state.

I discover that when I power up the laptop, login and resume after suspend cause laptop to restart.
But if I power up laptop and before login I restart it, and after login suspend and resume works OK. It also apply if I CTRL+ALT+DEL before ubuntu boot logo appears.

I tried to see the grub config with press "E" key before boot, but I can't enter to grub editor when I use that method to make suspend works.

Please If others experienced user can help me.

Question information

English Edit question
Ubuntu-Certification Edit question
No assignee Edit question
Solved by:
Jerry Kao
Last query:
Last reply:
Launchpad Janitor (janitor) said : #1

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Po-Hsu Lin (cypressyew) said : #2

Re-open this,

Thanks for letting us know about this issue, I will loop this to the correct place.

Also for the fingerprint, it sounds like there are two issues here
1. Name, the name should be updated in this database,
 2. Fingerprint reader support, unfortunately it is badly supported in Linux world. You may try your luck with fingerprint-gui project, please refer to this FAQ.

Ioan Cristea (krioft) said : #3

Hello. I come with some edit at resume after suspend problem.

Jerry Kao (jerry.kao) said : #4

Hi Loan,

Could you help to provide following info

1) release version (lab_release -a)
2) kernel version (uname -a)
3) bios version (sudo dmidecode -s bios-version)


Ioan Cristea (krioft) said : #5

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.10
Release: 18.10
Codename: cosmic

2) Linux ioan-laptop 4.15.0-1034-oem #39-Ubuntu SMP Fri Feb 15 13:10:11 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

3) 1.3.0

Best Jerry Kao (jerry.kao) said : #6

Hi Ioan,

The resume issue will be fixed in next BIOS release soon.

Ioan Cristea (krioft) said : #7

Thanks for your help!
I will keep eye on dell website.

Ioan Cristea (krioft) said : #8


Resume after suspend problem solved by upgrade BIOS to 2.2.0 from Dell website.
Fingerprint not working but I wait good news.

Thanks Jerry Kao

Ioan Cristea (krioft) said : #9

Thanks Jerry Kao, that solved my question.