last year in march i boughta Lenovo W520. When it arrived, i equiped it with 2 OCZ Vertex and one mSATA SSD insteat of the UMTS modem. I wanted t olearn about the new UEFI world so i decided to do a Dual boot installation, Windows7 and opensuse 12.2 Tumbleweed. I did the last updates for the hardware and set the notebook to UEFI boot. Everythink went well, but after one week working with the noteboot i had the first boot problems, the kernel hang during boot. One week later the W520 was not able to boot any more :NVRAM corrupted, and it wnt into a boot loop I sent it back to Lenovo and 4 weeks later i got a new one. But: Same procedure, after a good week: NVRAM corrupted. The mainboard was changed then 3 times, every time after one week: NVRAM corrupted. Last but not least i decided to give it a try with BIOS boot. and, guess what: since 7 month the notebook runs smoothly. I won't touch UEFI any more!
Lenovo W520 was destroyed
last year in march i boughta Lenovo W520.
When it arrived, i equiped it with 2 OCZ Vertex and one mSATA SSD insteat of the UMTS modem.
I wanted t olearn about the new UEFI world so i decided to do a Dual boot installation, Windows7 and opensuse 12.2 Tumbleweed.
I did the last updates for the hardware and set the notebook to UEFI boot.
Everythink went well, but after one week working with the noteboot i had the first boot problems, the kernel hang during boot.
One week later the W520 was not able to boot any more :NVRAM corrupted, and it wnt into a boot loop
I sent it back to Lenovo and 4 weeks later i got a new one.
But: Same procedure, after a good week: NVRAM corrupted.
The mainboard was changed then 3 times, every time after one week: NVRAM corrupted.
Last but not least i decided to give it a try with BIOS boot.
and, guess what: since 7 month the notebook runs smoothly.
I won't touch UEFI any more!