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Revert "drm/radeon: call hpd_irq_event on resume"
This reverts commitdbb17a21c1
. It turns out that commit can cause problems for systems with multiple GPUs, and causes X to hang on at least a HP Pavilion dv7 with hybrid graphics. This got noticed originally in 4.4.4, where this patch had already gotten back-ported, but 4.5-rc7 was verified to have the same problem. Alexander Deucher says: "It looks like you have a muxed system so I suspect what's happening is that one of the display is being reported as connected for both the IGP and the dGPU and then the desktop environment gets confused or there some sort problem in the detect functions since the mux is not switched to the dGPU. I don't see an easy fix unless Dave has any ideas. I'd say just revert for now" Reported-by: Jörg-Volker Peetz <jvpeetz@web.de> Acked-by: Alexander Deucher <Alexander.Deucher@amd.com> Cc: Dave Airlie <airlied@gmail.com> Cc: stable@kernel.org # whereverdbb17a21c1
got back-ported Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1744,7 +1744,6 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
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}
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drm_kms_helper_poll_enable(dev);
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drm_helper_hpd_irq_event(dev);
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/* set the power state here in case we are a PX system or headless */
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if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
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