https://bugs.freedesktop.org/show_bug.cgi?id=87682 --- Comment #11 from Thom --- ok, some results: PLL-readings on good working compilations: 3.15.0-rc1-00303-g6e66d5d [drm:radeon_compute_pll_avivo] 69300 - 6949, pll dividers - fb: 165.0 ref: 2, post 17 3.15.0-rc2-00042-g4d0fa8a [drm:radeon_compute_pll_avivo] 69300 - 6930, pll dividers - fb: 329.1 ref: 4, post 17 3.15.0-rc2-00077-g76e7745 [drm:radeon_compute_pll_avivo] 69300 - 6930, pll dividers - fb: 329.1 ref: 4, post 17 3.15.0-rc1-00070-g2431581 no output, system hangs loading driver in debug mode (probably because this one didn't had the patch yet.) works ok when not in debug mode. PLL-readings on bad noisy-artefacty compilations: 3.15.0-rc2-00069-g1aae31c [drm:radeon_compute_pll_avivo] 69300 - 69290, pll dividers - fb: 135.5 ref: 2, post 14 3.15.0-rc1-00071-gc2fb309 [drm:radeon_compute_pll_avivo] 69300 - 69290, pll dividers - fb: 135.5 ref: 2, post 14 3.15.0-rc1-00075-g3ed9a33 [drm:radeon_compute_pll_avivo] 69300 - 69290, pll dividers - fb: 135.5 ref: 2, post 14 3.15.0-rc2-00092-g92891ed [drm:radeon_compute_pll_avivo] 69300 - 69290, pll dividers - fb: 135.5 ref: 2, post 14 Problem is: I haven't the slightest clue what it all means. -- You are receiving this mail because: You are the assignee for the bug.