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Paper Tape
Posts: 6
Registered: ‎10-20-2017
Location: ZA
Message 21 of 73 (3,330 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

I am on Ubuntu 17.10 and could not find the file grubx64.efi but I do have grubx64.efi.signed

I have replaced this file with the refind_x64.efi but not change. Did I replace the correct file ? or ?
Paper Tape
Posts: 6
Registered: ‎11-08-2017
Location: IT
Message 22 of 73 (3,303 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

I resolved!

I have a eprom programmer (Minipro TL866CS)..

I did'nt flash the original chip on the motherboard, but i bought a brand new chip (i had found an GD25Q64BISIG on ebay)

so i read the original eprom (the 3.03 that didn't save any change) and i saved the file (eprom303.bin).

Obviously, before I put out the bios chip with hot air...

After that, I programmed the new chip with the old data. I soldered the new chip on the motherboard ... and now it works! now save all change, now i can boot in legacy mode!!!

I didn't try to remove and solder the same chip..maybe this work too.

Sorry for my bad english... but i hope to help somebody to fix this problem

Blue Screen Again
Posts: 5
Registered: ‎04-02-2017
Location: PL
Message 23 of 73 (3,298 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

Good job,
also there is also adapter to eeprom programmer which don't require soldering:
"clip SOIC8 SOP8 DIP8"

Paper Tape
Posts: 6
Registered: ‎11-08-2017
Location: IT
Message 24 of 73 (3,282 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

Yes, i have this tool, but i must desolder chip becouse I could not read the data properly.
The program didn't recognize the chip..
After desodering chip, i put it in the clip end read perfectly....
Punch Card
Posts: 14
Registered: ‎09-24-2017
Location: DE
Message 25 of 73 (3,267 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

If your Linux is still working use the command:
efibootmgr -v
to see exactly, to what file the BIOS bootloader is hardcoded. Then replace that file with rEFInd dedicated.
Paper Tape
Posts: 1
Registered: ‎12-09-2015
Location: IN
Message 26 of 73 (2,919 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

I have the same issue but with some differences.

My device is in dual boot. Windows 10 and ubuntu latest.

 

Now I am able to open only ubuntu.

While ttrying to open Windows it shows :

alloc magic is broken at 0x74cc3de0: 0

Aborted. Press any key to exit._

 

So what to do now.

 

Thanks in advance for any kind of help related to this.

Fanfold Paper
Posts: 5
Registered: ‎11-10-2017
Location: US
Message 27 of 73 (2,867 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

I think it is really absurd that some basic feature like dual-boot bricks a BIOS chip. Actually absurd part is it is a known issue and Lenovo doesn`t do anything about it. I had to send my PC to Hardware service to solve the issue. But I had to dual boot for my project and i think it accured again. Luckly this time I realized before losing both OS but still if I want to change OS it is not possible anymore, It makes me feel left alone by the company. I don`t know what we can do about it

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Paper Tape
Posts: 6
Registered: ‎10-20-2017
Location: ZA
Message 28 of 73 (2,848 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

It is not the dual boot but Ubuntu 17.10 causing the problem with Lenovo. Please follow this link and click "Yes, it affects me" so we can get the numbers up.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1734147
Paper Tape
Posts: 4
Registered: ‎11-04-2017
Location: US
Message 29 of 73 (2,831 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

[ Edited ]

A simple fix can be provided by Lenovo Engineers is a bios recovery update using USB flash drive, but unfortunately this solution isn't even available for our laptop...

Punch Card
Posts: 14
Registered: ‎09-24-2017
Location: DE
Message 30 of 73 (2,823 Views)

Re: Y50 70 BIOS Can't Save Settings Or Exit

Please don not spread false information. It is no Ubuntu 17.10 issue. I never had Ubuntu but Antergos and the same happen to me. This is hardware failure of the NVRAM - too many writes, caused by how Linux/systemd (my guess) is handling any Kernel related change.

 

The real fix has been mentioned here - replacing the NVRAM and copying the old ones content to it.

Wayaround - my solution with rEFInd.

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