Hi
I have a Debian testing 64 bits running on a Dell Optiplex 960.
I have three different kernels installed: 2.6.32-5, 3.2.0-1 and 3.2.0-2.
Until a recent upgrade (through apt-get update/apt-get upgrade), I
could not use the Gnome login screen with kernel versions 3.2.0-1 and
3.2.0-2: the top of the screen displayed a strange random pattern of
pixels of many colors and the bottom of the screen was black. However,
in this case, I was able to use GUI login, and, thus, Debian by using
2.6.32-5 kernel.
After a recent upgrade, the Gnome login screen is now not even
available with the 2.6.32-5 kernel. I only have a black screen with a
cursor on the top-right corner and a rectangle constituted of random
pixels in black and white located at the left of the screen and close
to the top of the screen.
I tried to remove the gdm3 package. This allow me reach the login
console with the 2.6.32-5 kernel. In this case, I also have a
rectangle constituted of random pixels in black and white located at
the same place: left of the screen and close to the top of the screen.
And, I still have the same bug as before with kernel versions 3.2.0-1
and 3.2.0-2: random pattern of pixels in many colors on top of the
screen and black on the bottom of the screen.
I tried to use the command startx when I am in the console but there
is a problem. I do not copy here the result but I can extract. I think
that this problem is causing the trouble with Gnome.
Lspci finds this graphic card:
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee
ATI RV620 LE [Radeon HD 3450] (prog-if 00 [VGA controller])
Subsystem: Dell Device 0342
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at fe9f0000 (64-bit, non-prefetchable) [size=64K]
I/O ports at dc00 [size=256]
Expansion ROM at fea00000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
I have no idea how to fix this problem.
I would be grateful is somebody could help me fix it.
Regards.
Johan
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