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Undervolting help / Is it possible to roll back an Apple BIOS to an older version without wiping Ubuntu & reinstalling MacOS?

My work laptop is a Late 2013 MacBook Pro. Its current Apple BIOS version is 432.40.8.0.1 and its CPU is an Intel i7-4750HQ. It runs Ubuntu 22.04.4 LTS only. No dual boot, no VM. My overarching goal ...
notstarboard's user avatar
0 votes
0 answers
54 views

How to fix Secure Boot error "Image failed to verify with *ACCESS DENIED*" [duplicate]

When attempting to boot a live OS via USB or CD, I get the secure boot error: "Image failed to verify with ACCESS DENIED". There is no SSD/HDD installed. Secure Boot is enabled and while I ...
Ramzialzaki Weir's user avatar
0 votes
0 answers
102 views

Ubuntu 22.04.4 getting freezed after resuming from Suspended

I have a Dell Latitude 5500, it works perfectly fine with Windows. But on installing Ubuntu, it started freezing unexpectedly. A common pattern I observed is on resuming it from the Suspended state. I'...
M. Shahzaib's user avatar
-3 votes
1 answer
117 views

My question is about getting error mesage while starting my laptop on dual boot ( windows 10 and ubuntu 22.04.3)

i do have dual boot on my laptop Windows 10 and Ubuntu 22.04.3. I am getting this message on my laptop's display. Can you guys please explain me what wrong on my laptop and how to fix this?
Sushil Basnet's user avatar
0 votes
1 answer
246 views

HP Pavilion Ubuntu installation BIOS problem

I'm trying to install Ubuntu LTS on my new HP Pavilion laptop and getting these errors: Detailed explanation: I'm trying to install Ubuntu on my newly purchased HP Pavilion which came out of the box ...
Muhammad Saeed's user avatar
0 votes
0 answers
108 views

DMAR Firmware bug

OK, I have seen answers to this problem DMAR: [Firmware Bug]: No Firmware reserved region can cover this RMRR, contact BIOS vendor for fixes But as a complete computer dummy I don't understand the ...
Sean's user avatar
  • 1
0 votes
0 answers
216 views

DBX firmware update and corrupted bios

everyone, Last week, I updated the DBX firmware to 371 from Ubuntu on Aspire A515-43. So, when I updated the dbx, my laptop froze (Ubuntu OS), which led me to perform a forced shutdown via the power ...
Maher_2000's user avatar
0 votes
1 answer
406 views

Firmware/Bios update and no sound on ubuntu 20.04

My laptop is a Dell Vostro 5490 After a firmware update that was made from Ubuntu Software Center I have no sound from speakers, although when I use a usb headphones/microphone I get sound. arecord -l ...
Dimos Karagiannis's user avatar
0 votes
0 answers
112 views

Failure to install Ubuntu

I try to install ubuntu22.04.02 lts in my laptop asus x540u models, at first time all things are working good only in steps 5 when i chose to erase the disk with LVM, so it contine to loading without ...
JEEdz's user avatar
  • 11
1 vote
1 answer
2k views

ThinkPad T14 Gen 3 Type 21CF BIOS/firmware issue with laptop lid close and suspend

I recently bought a ThinkPad T14 Gen 3 Type 21CF. Here's a link to the Lenovo product page: link Here's what I did: I have Ubuntu 22.04 installed. I ran: sudo fwupdmgr update I did this because my ...
Micah Parks's user avatar
14 votes
2 answers
42k views

DMAR firmware bug. Broken BIOS?

I am seeing below error message on my laptop screen upon loading Ubuntu but I am able to login without problem. What do you think could be wrong? DMAR: [Firmware Bug]: No firmware reserved region can ...
Andrew Harlan's user avatar
0 votes
1 answer
1k views

Lenovo ideapad 5-15ARE05 firmware upgrade, how to?

Running a Lenovo ideapad 5-15ARE05 (4800u) (shipped with FreeDos) without major issues with Ubuntu 20.10. Touchpad, graphics and display are working fine with the 5.8 kernel. Although the fingerprint ...
Janghou's user avatar
  • 5,799
23 votes
2 answers
27k views

How to update the computer bios firmware without using Windows

I have a Dell Inspiron 3647 desktop with Ubuntu 20.04 LTS (Focal Fossa). How can I check the bios firmware version from inside Ubuntu and update it (if necessary) without using MS Windows?
Felipe G. M. Maia's user avatar
4 votes
0 answers
81 views

Is there a way to check the bios battery from the command line? [duplicate]

Is there a way to check the bios battery life from the command line?
j0h's user avatar
  • 14.9k
0 votes
1 answer
123 views

Does updating firmware updates the bios in ubuntu 18?

I am using ubuntu 18 and wish to update both the firmware and the bios. Does updating the firmware using this manual and this command update the bios as well as the firmware? sudo fwupdmgr update
thebeancounter's user avatar
0 votes
1 answer
1k views

Was my bios updated? Scary two minutes with black screen, system beeps and total unresponsiveness

I'm on Ubuntu 18.04 with my Lenovo Thinkpad T460s. After an update a couple of weeks ago I did a reboot and I saw something which included the word "EFI" in the top left corner of my screen. Then ...
Christian's user avatar
  • 1,749
17 votes
2 answers
28k views

Update Gigabyte Motherboard BIOS with Ubuntu

I have a Gigabyte GA-J1900N-D3V, running a small server computer. I exclusively use Ubuntu 16.04 on it. Recently, I bought a Mini-PCIe expansion board to add additional storage - the motherboard has ...
seanlano's user avatar
  • 3,056
1 vote
1 answer
981 views

Can anybody help me resolve these FWTS issues?

See the list below. I have no clue where to start. I ran firmware testsuitelive (USB). Some tests failed, which might explain the issues I'm having with my machine (constant reboot after shutdown or ...
David Van Huffel's user avatar
4 votes
1 answer
3k views

In ubuntu, how to find whether CMOS battery is working or not? [closed]

I want to programatically determine whether CMOS battery is working or not. In my C++ program on linux I want to connect to internet and update system time if CMOS battery is not present or not ...
Necktwi's user avatar
  • 1,077
0 votes
3 answers
1k views

apparent low color depth on EFI Boot

I am running Ubuntu 13.04 and Mint 14 on a Mac Mini 6,2 (Late 2012) - Intel HD4000. When I boot from the legacy BIOS, I see good colour as it should appear. However, when I boot from the EFI partition,...
Lord Loh.'s user avatar
  • 893
1 vote
1 answer
20k views

How do I install update the BIOS of my Acer Aspire 4820TG laptop?

The BIOS update for the Acer Aspire 4820TG is distributed as a zip file, containing a Windows executable and a DOS executable. How do I get this installed under Ubuntu without resorting to installing ...
CadentOrange's user avatar