On Sun, 2011-02-20 at 10:17 -0300, Gunther Furtado wrote: > Package: linux-2.6 > Version: 2.6.37-1 > Severity: critical > Tags: d-i > Justification: breaks the whole system > > Hi, > > First of all: I cannot run reportbug while running the package I am reporting > this bug because I cannot boot from it.
I suspect this is due to my changes to framebuffer driver selection, which you obviously noticed. The problem is that on PowerPC systems we cannot assume hardware support for a text mode (as on PCs) and so we must select from the following sets of framebuffer drivers: 1. Generic drivers using firmware or standard registers (FB_OF, FB_VGA16, ...) 2. Specific drivers without support for GPU acceleration (FB_INTEL, FB_NVIDIA, FB_RADEON, ...) 3. Specific drivers with KMS and GEM/TTM (DRM_I915, DRM_NOUVEAU, DRM_RADEON) The type 1 drivers generally allow switching to a different driver for the same hardware. But once we have loaded a type 2 or 3 driver there is no way to switch without rebooting. Previously we built-in several type 2 drivers, which meant KMS was not possible. However, current X drivers for Intel, Nvidia and AMD/ATI hardware require KMS and GEM/TTM so we cannot continue to do this. We need to load type 3 drivers, but they are so large that we don't want to make them built-in. Also, the AMD/ATI Radeon driver requests firmware for 3D acceleration, which is not available at the time built-in drivers are initialised. Therefore, I'm trying to build-in type 1 drivers that cover all PowerPC hardware. Apparently that doesn't work. Do you see any messages from the kernel, or just a blank screen? Ben. -- Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse.
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