Brian May wrote:
Hello,
I have a i7 based HP computer here that until recently was booting
Linux and Windows just fine. According to the user, it stopped working
after updating the graphics drivers under Windows.
Anyway the symptoms are:
* Grub loads fine.
* Selecting any Linux kernel from grub, results in the computer
freezing immediately after loading the kernel (no time to initialize
the kernel), with a black screen.
* Selecting memtest results in similar problems.
* Same thing happens booting from rescue items in grub menu. No extra
debugging information.
* Keyboard unresponsive after crash. Caps-lock, num-lock, and
Ctrl-Alt-Delete don't work.
* Booting windows works fine.
* Booting Debian live CD image on USB works fine. It has the standard
Debian wheezy kernel, 3.2.0-4-amd64, which is the same as one of the
options I was attempting to boot from the hard disk.
* Power cycling is the only way to un-crash the system.
Extra facts:
* It is a Nvidia GeForce GT 640 based graphics card
* The live CD does not use grub.
* Debian/wheezy based system with extra kernels installed from Debian
backports.
* The dog barking does not make any difference what so ever.
* Nvidia closed source drivers not installed (not that I see this
making any difference, as the kernel doesn't appear to be started when
it crashes)
* This is a UEFI boot system, with secure boot turned off.
Have tried installing another kernel after booting live CD, and
reinstalling grub, however nothing changed.
Have run memtest from live CD, no errors reported.
Only thing I can think of is that the update of the graphics drivers
under Windows has updated the graphics card firmware breaking boots
from the version of Grub in Debian stable/wheezy. Does this even make
sense?
Any other ideas?
Not clear to me that the above, eliminated possibility that,
the Nvidia GeForce GT 640 Windows driver update;
some how corrupted the installed Debian/wheezy driver ?
regards Rohan McLeod
Thanks
--
Brian May <[email protected]
<mailto:[email protected]>>
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