Hi everyone
Since a month or so my laptop, a refurbished Dell Latitude E5550, has been unable to exit sleep mode or properly reboot. Upon waking from sleep mode it shuts down and reboots and upon attempting a reboot it just hangs at a black screen forever. The laptop was working fine for several years up until a month ago.
Initially I thought it was OS related, since it's running Arch Linux, wouldn't be the first time an update broke something but it also happens on Windows, Ubuntu live images and even a complete restored image from a year ago where it definitely worked fine.
Upon booting the message "FW Status recovery error" is visible and in the boot menu I'm unable to enter the MEBx extension menu. It just reboots then and afterwards the MEBx extension menu disappears from the boot menu.
Apparently the FW error is caused by a corrupted Intel Management Engine according to some threads found on Google.
In the BIOS there's no way to disable MEBx, it's only possible to disable hotkeys or menu entries from here. I've never used any of these functions and they're better off disabled, but they never caused any issues either up until now.
The CMOS battery is not the issue, I've replaced that already but it wasn't even necessary according to the batteries' voltage.
Now the most annoying side effect, flashing a new BIOS which could fix the issue does not work because it requires a reboot, which at this moment the laptop is unable to do.
Perhaps it's possible that a MOSFET on the mainboard, that controls power states, is somehow fried? Is there any proper way to figure that out according to the schematics?
Is it possible to reflash the BIOS and/or MEBx part from either Linux or Windows that doesn't require a reboot?
Thanks!
Since a month or so my laptop, a refurbished Dell Latitude E5550, has been unable to exit sleep mode or properly reboot. Upon waking from sleep mode it shuts down and reboots and upon attempting a reboot it just hangs at a black screen forever. The laptop was working fine for several years up until a month ago.
Initially I thought it was OS related, since it's running Arch Linux, wouldn't be the first time an update broke something but it also happens on Windows, Ubuntu live images and even a complete restored image from a year ago where it definitely worked fine.
Upon booting the message "FW Status recovery error" is visible and in the boot menu I'm unable to enter the MEBx extension menu. It just reboots then and afterwards the MEBx extension menu disappears from the boot menu.
Apparently the FW error is caused by a corrupted Intel Management Engine according to some threads found on Google.
In the BIOS there's no way to disable MEBx, it's only possible to disable hotkeys or menu entries from here. I've never used any of these functions and they're better off disabled, but they never caused any issues either up until now.
The CMOS battery is not the issue, I've replaced that already but it wasn't even necessary according to the batteries' voltage.
Now the most annoying side effect, flashing a new BIOS which could fix the issue does not work because it requires a reboot, which at this moment the laptop is unable to do.
Perhaps it's possible that a MOSFET on the mainboard, that controls power states, is somehow fried? Is there any proper way to figure that out according to the schematics?
Is it possible to reflash the BIOS and/or MEBx part from either Linux or Windows that doesn't require a reboot?
Thanks!
Comment