[Bug 357908] Re: [i965] X hang with EXA while scrolling in firefox

[Steve Beattie]

And the "good" output while running the same kernel, though with
xserver-xorg-video-intel 2:2.6.3-0ubuntu8 installed/running.

The diff of the two looks like:

--- registers_good.txt  2009-04-08 12:35:33.000000000 -0700
+++ registers_bad.txt   2009-04-08 11:24:34.000000000 -0700
@@ -46,27 +46,27 @@
 (II):         PFIT_CONTROL: 0x00000000
 (II):      PFIT_PGM_RATIOS: 0x0f9b0ea1
 (II):      PORT_HOTPLUG_EN: 0x00000020
-(II):    PORT_HOTPLUG_STAT: 0x00000000
-(II):             DSPACNTR: 0x58000400 (disabled, pipe A)
-(II):           DSPASTRIDE: 0x00001600 (5632 bytes)
+(II):    PORT_HOTPLUG_STAT: 0x00000800
+(II):             DSPACNTR: 0x00000000 (disabled, pipe A)
+(II):           DSPASTRIDE: 0x00000000 (0 bytes)
 (II):              DSPAPOS: 0x00000000 (0, 0)
 (II):             DSPASIZE: 0x00000000 (1, 1)
 (II):             DSPABASE: 0x00000000
-(II):             DSPASURF: 0x0179f000
+(II):             DSPASURF: 0x00000000
 (II):          DSPATILEOFF: 0x00000000
 (II):            PIPEACONF: 0x00000000 (disabled, inactive)
 (II):             PIPEASRC: 0x027f01df (640, 480)
-(II):            PIPEASTAT: 0x00040000 (status: SVBLANK_INT_ENABLE)
-(II):                 FPA0: 0x00021108 (n = 2, m1 = 17, m2 = 8)
+(II):            PIPEASTAT: 0x00000000 (status:)
+(II):                 FPA0: 0x00031108 (n = 3, m1 = 17, m2 = 8)
 (II):                 FPA1: 0x00031108 (n = 3, m1 = 17, m2 = 8)
-(II):               DPLL_A: 0x14800c00 (disabled, non-dvo, default clock, DAC/serial mode, p1 = 8, p2 = 10)
-(II):            DPLL_A_MD: 0x00000000
-(II):             HTOTAL_A: 0x033f027f (640 active, 832 total)
-(II):             HBLANK_A: 0x033f027f (640 start, 832 end)
-(II):              HSYNC_A: 0x02bf0297 (664 start, 704 end)
-(II):             VTOTAL_A: 0x020701df (480 active, 520 total)
-(II):             VBLANK_A: 0x020701df (480 start, 520 end)
-(II):              VSYNC_A: 0x01ea01e8 (489 start, 491 end)
+(II):               DPLL_A: 0x04800c00 (disabled, non-dvo, VGA, default clock, DAC/serial mode, p1 = 8, p2 = 10)
+(II):            DPLL_A_MD: 0x00000303
+(II):             HTOTAL_A: 0x031f027f (640 active, 800 total)
+(II):             HBLANK_A: 0x03170287 (648 start, 792 end)
+(II):              HSYNC_A: 0x02ef028f (656 start, 752 end)
+(II):             VTOTAL_A: 0x020c01df (480 active, 525 total)
+(II):             VBLANK_A: 0x020401e7 (488 start, 517 end)
+(II):              VSYNC_A: 0x01eb01e9 (490 start, 492 end)
 (II):            BCLRPAT_A: 0x00000000
 (II):         VSYNCSHIFT_A: 0x00000000
 (II):             DSPBCNTR: 0xd9000400 (enabled, pipe B)
@@ -82,7 +82,7 @@
 (II):                 FPB0: 0x00051109 (n = 5, m1 = 17, m2 = 9)
 (II):                 FPB1: 0x00031108 (n = 3, m1 = 17, m2 = 8)
 (II):               DPLL_B: 0x99026c00 (enabled, non-dvo, spread spectrum clock, LVDS mode, p1 = 2, p2 = 7)
-(II):            DPLL_B_MD: 0x00000000
+(II):            DPLL_B_MD: 0x3f3f3f00
 (II):             HTOTAL_B: 0x06970577 (1400 active, 1688 total)
 (II):             HBLANK_B: 0x06970577 (1400 start, 1688 end)
 (II):              HSYNC_B: 0x061705a7 (1448 start, 1560 end)
@@ -137,7 +137,7 @@
 (II):         FBC_CONTROL2: 0x00000000
 (II):        FBC_FENCE_OFF: 0x00000000
 (II):          FBC_MOD_NUM: 0x00000000
-(II):              MI_MODE: 0x00000200
+(II):              MI_MODE: 0x00000000
 (II):         MI_ARB_STATE: 0x00000044
 (II):       MI_RDRET_STATE: 0x00000000
 (II):              ECOSKPD: 0x00000307
@@ -162,6 +162,6 @@
 (II):     DPD_AUX_CH_DATA3: 0x00000000
 (II):     DPD_AUX_CH_DATA4: 0x00000000
 (II):     DPD_AUX_CH_DATA5: 0x00000000
-(II): pipe A dot 31500 n 2 m1 17 m2 8 p1 8 p2 10
+(II): pipe A dot 25200 n 3 m1 17 m2 8 p1 8 p2 10
 (II): pipe B dot 108163 n 5 m1 17 m2 9 p1 2 p2 7
 (II): DumpRegsEnd

** Attachment added: "registers_good.txt"
   http://launchpadlibrarian.net/25053026/registers_good.txt

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[i965] X hang with EXA while scrolling in firefox
https://bugs.launchpad.net/bugs/357908
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