http://bugzilla.kernel.org/show_bug.cgi?id=6206
Summary: nforce3 agp does not initialized properly after resume
Kernel Version: 2.6.16-rc5
Status: NEW
Severity: normal
Owner: [EMAIL PROTECTED]
Submitter: [EMAIL PROTECTED]
Most recent kernel where this bug did not occur: N/A
Distribution: any
Hardware Environment: amd64 laptop nforce3 chipset ati radeon m9 videocard
Software Environment: N/A
Problem Description: after resume from acpi S3 suspend-to-ram text console works
but system hangs when starting X (or switching to virtual console where X is
running). No useful messages was captured via network console. I was able to
produce workaround for this bug, here it is (this patch is for 2.6.16-rc5
kernel):
drivers/char/agp/amd64-agp.c | 1 +
1 file changed, 1 insertion(+)
Index: linux/drivers/char/agp/amd64-agp.c
===================================================================
--- linux.orig/drivers/char/agp/amd64-agp.c
+++ linux/drivers/char/agp/amd64-agp.c
@@ -615,6 +615,7 @@ static int agp_amd64_resume(struct pci_d
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
+ nforce3_agp_init(pdev);
return amd_8151_configure();
}
with this patch, everything works just fine.
Steps to reproduce:
(1). compile 2.6.16-rc5 kernel, applying hack mentioned here:
http://bugzilla.kernel.org/show_bug.cgi?id=5866#c1 to make hdd work after
resume.
(2). suspend system, saving video state with vbetool version 0.4 or later
(previous versions of vbetool did not work on amd64)
http://www.srcf.ucam.org/~mjg59/vbetool/ as prescribed in
Documentation/power/video.txt
(3). after resume, start X. use power switch to shut down hung system =).
Note: this failure can be reproduced with earlier kernels, 2.6.15 and 2.6.14
(not tried 2.6.13) but the workaround for this is slightly different. (at
resume, you need to call also amd_8151_configure() in amd64-agp.c and
ati_configure() in ati-agp.c).
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