[Bug 31724] Screen rotation broken for evergreen?!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=31724

--- Comment #9 from Alex Deucher <agd5f at yahoo.com> 2010-11-30 07:41:12 PST ---
Does this help?

--- a/src/radeon_kms.c
+++ b/src/radeon_kms.c
@@ -605,7 +605,7 @@ Bool RADEONPreInit_KMS(ScrnInfoPtr pScrn, int flags)
     if (info->ChipFamily >= CHIP_FAMILY_R600) {
        /* set default group bytes, overriden by kernel info below */
        if (info->ChipFamily >= CHIP_FAMILY_CEDAR)
-           info->group_bytes = 512;
+           info->group_bytes = 256;//512;
        else
            info->group_bytes = 256;
        if (info->dri->pKernelDRMVersion->version_minor >= 6) {

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