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SubjectRe: has the i915 "black screen" boot issue returned? [BISECTED]
On Fri, 28 Jan 2011, Rafael J. Wysocki wrote:

> Alternatively, you could take the vanilla Linus' tree and replace
> ioremap_cache() with ioremap() in include/linux/acpi_io.h . Please
> try that and see if it makes a difference.

as a quick followup, i applied the following simple patch:

$ git diff
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 64fd644..28adc6d 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -495,6 +495,8 @@ int intel_opregion_setup(struct drm_device *dev)
opregion->acpi = base + OPREGION_ACPI_OFFSET;

+return 0; // rday
if (mboxes & MBOX_SWSCI) {
DRM_DEBUG_DRIVER("SWSCI supported\n");
opregion->swsci = base + OPREGION_SWSCI_OFFSET;

to the latest tree, and it gave me a booting kernel, no black screen
issue. i will not pretend to understand why that fixes the problem
but it does.



Robert P. J. Day Waterloo, Ontario, CANADA

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