[Bug 26552] Screen flickering with 2.6.37 [ATI X1600]

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=26552





--- Comment #10 from Alex Deucher <alexdeucher at gmail.com>  2011-01-13 16:54:22 ---
In addition to the patch does booting with:
radeon.disp_priority=2
on the kernel command line in grub help?

Additionally you can try these patches individually and see if any of them
help?

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c
b/drivers/gpu/drm/radeon/atombios_crtc.c
index 46178f9..50b4ef4 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -521,6 +521,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
        pll->flags = 0;

        if (ASIC_IS_AVIVO(rdev)) {
+               pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
                if ((rdev->family == CHIP_RS600) ||
                    (rdev->family == CHIP_RS690) ||
                    (rdev->family == CHIP_RS740))

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c
b/drivers/gpu/drm/radeon/atombios_crtc.c
index 46178f9..24aa984 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -521,6 +521,8 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
        pll->flags = 0;

        if (ASIC_IS_AVIVO(rdev)) {
+               pll->flags |= (RADEON_PLL_PREFER_MINM_OVER_MAXP |
+                              RADEON_PLL_USE_FRAC_FB_DIV);
                if ((rdev->family == CHIP_RS600) ||
                    (rdev->family == CHIP_RS690) ||
                    (rdev->family == CHIP_RS740))

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c
b/drivers/gpu/drm/radeon/atombios_crtc.c
index 46178f9..fa8b96a 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -521,6 +521,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
        pll->flags = 0;

        if (ASIC_IS_AVIVO(rdev)) {
+               pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV;
                if ((rdev->family == CHIP_RS600) ||
                    (rdev->family == CHIP_RS690) ||
                    (rdev->family == CHIP_RS740))

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