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SubjectRe: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.

On Feb 20, 2008 2:19 PM, Jeff Chua
> I'll try the "idle=poll" to see if that works and will try some printk

I don't know what exactly the i915_suspend() and i915_resume() are
supposed to do because it works better without them.

After inserting "return 0;" right at the top of those two functions,
suspend (and power-off properly), and resume (without green screen) works
just fine.

I would like to know what they're for.

Tested suspend-to-ram, and suspend-to-disk, both console and X on notebook
internal LCD display, all works without these two functions.

But, anyway, got down to just one line in i915_drv.c causing the hang
during suspend. "pci_set_power_state(dev->pdev, PCI_D3hot);".

And green screen problem during resume is caused by i915_restore_vga(dev);

So, let me where to go from here.


--- linux/drivers/char/drm/i915_drv.c.bad 2008-02-20
11:29:14 +0800
+++ linux/drivers/char/drm/i915_drv.c 2008-02-21 00:58:37 +0800
@@ -369,7 +369,7 @@
if (state.event == PM_EVENT_SUSPEND) {
/* Shut down the device */
- pci_set_power_state(dev->pdev, PCI_D3hot);
+ //pci_set_power_state(dev->pdev, PCI_D3hot);

return 0;
@@ -521,7 +521,7 @@
for (i = 0; i < 3; i++)
I915_WRITE(SWF30 + (i << 2), dev_priv->saveSWF2[i]);

- i915_restore_vga(dev);
+ //i915_restore_vga(dev);

return 0;

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