No 1680x1050 with HD4200 (RV620)

Hi,

i have:

An onboard Radeon HD4200 (RV620)
Kernel 2.6.32
xorg-server-1.6.5
xf86-video-ati-6.12.4 driver

If I use smaller resolutions, e.g. 1280x1024 everything works fine.
If I use the proprietary fglrx driver everything works fine even with the 1680x1050 resolution.

If I use the Open Source driver with the 1680x1050 resolution, the display starts flickering: It often turns black for about half a second when moving the mouse, typing on the keyboard or the cpu is under load.

I think dmesg outputdoes not contain anything related to this problem.

Here are some snippets of the complete Xorg.0.log which might be important:

Code:

... (--) RADEON(0): Chipset: "ATI Radeon HD 4200" (ChipID = 0x9710) (--) RADEON(0): Linear framebuffer at 0x00000000d0000000 (II) RADEON(0): PCI card detected (II) Loading sub module "int10" (II) LoadModule: "int10" (II) Loading /usr/lib/xorg/modules//libint10.so (II) Module int10: vendor="X.Org Foundation" compiled for 1.6.5, module version = 1.0.0 ABI class: X.Org Video Driver, version 5.0 (II) RADEON(0): initializing int10 (II) RADEON(0): Primary V_BIOS segment is: 0xc000 (II) RADEON(0): ATOM BIOS detected (II) RADEON(0): ATOM BIOS Rom: SubsystemVendorID: 0x1002 SubsystemID: 0x1002 IOBaseAddress: 0xc000 Filename: 13B43106.204 BIOS Bootup Message: 113-B43106-204 RS880 DDR2 200e/500m (II) RADEON(0): Framebuffer space used by Firmware (kb): 20 (II) RADEON(0): Start of VRAM area used by Firmware: 0x16ffb000 (II) RADEON(0): AtomBIOS requests 20kB of VRAM scratch space (II) RADEON(0): AtomBIOS VRAM scratch base: 0x16ffb000 (II) RADEON(0): Cannot get VRAM scratch space. Allocating in main memory instead (II) RADEON(0): Default Engine Clock: 500000 (II) RADEON(0): Default Memory Clock: 800000 (II) RADEON(0): Maximum Pixel ClockPLL Frequency Output: 1200000 (II) RADEON(0): Minimum Pixel ClockPLL Frequency Output: 0 (II) RADEON(0): Maximum Pixel ClockPLL Frequency Input: 13500 (II) RADEON(0): Minimum Pixel ClockPLL Frequency Input: 1000 (II) RADEON(0): Maximum Pixel Clock: 400000 (II) RADEON(0): Reference Clock: 14320 drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is 10, (OK) drmOpenByBusid: Searching for BusID pci:0000:01:05.0 drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is 10, (OK) drmOpenByBusid: drmOpenMinor returns 10 drmOpenByBusid: drmGetBusid reports pci:0000:01:05.0 (II) RADEON(0): [dri] Found DRI library version 1.3.0 and kernel module version 1.31.0 (==) RADEON(0): Page Flipping disabled on r5xx and newer chips. (II) RADEON(0): Will try to use DMA for Xv image transfers (II) RADEON(0): Detected total video RAM=376832K, accessible=262144K (PCI BAR=262144K) (--) RADEON(0): Mapped VideoRAM: 262144 kByte (128 bit DDR SDRAM) (II) RADEON(0): Color tiling disabled (II) Loading sub module "ddc" (II) LoadModule: "ddc" (II) Module "ddc" already built-in (II) Loading sub module "i2c" (II) LoadModule: "i2c" (II) Module "i2c" already built-in (II) RADEON(0): ref_freq: 1432, min_out_pll: 64800, max_out_pll: 120000, min_in_pll: 100, max_in_pll: 1350, xclk: 40000, sclk: 500.000000, mclk: 800.000000 (II) RADEON(0): PLL parameters: rf=1432 rd=12 min=64800 max=120000; xclk=40000 (II) RADEON(0): Output VGA-0 has no monitor section (II) RADEON(0): I2C bus "VGA-0" initialized. (II) RADEON(0): Output DVI-0 has no monitor section (II) RADEON(0): I2C bus "DVI-0" initialized. (II) RADEON(0): Port0: XRANDR name: VGA-0 Connector: VGA CRT1: INTERNAL_KLDSCP_DAC1 DDC reg: 0x7e40 (II) RADEON(0): Port1: XRANDR name: DVI-0 Connector: DVI-D DFP3: INTERNAL_KLDSCP_LVTMA DDC reg: 0x7e50 (II) RADEON(0): I2C device "VGA-0:E-EDID segment register" registered at address 0x60. (II) RADEON(0): I2C device "VGA-0:ddc2" registered at address 0xA0. Dac detection success (II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0 finished output detect: 0 (II) RADEON(0): I2C device "DVI-0:E-EDID segment register" registered at address 0x60. (II) RADEON(0): I2C device "DVI-0:ddc2" registered at address 0xA0. (II) RADEON(0): Output: DVI-0, Detected Monitor Type: 3 (II) RADEON(0): EDID data from the display on output: DVI-0 ---------------------- (II) RADEON(0): Manufacturer: HWP Model: 2655 Serial#: 16843009 (II) RADEON(0): Year: 2006 Week: 16 (II) RADEON(0): EDID Version: 1.3 (II) RADEON(0): Digital Display Input (II) RADEON(0): Max Image Size [cm]: horiz.: 45 vert.: 28 (II) RADEON(0): Gamma: 2.20 (II) RADEON(0): DPMS capabilities: StandBy Suspend Off (II) RADEON(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 (II) RADEON(0): Default color space is primary color space (II) RADEON(0): First detailed timing is preferred mode (II) RADEON(0): redX: 0.640 redY: 0.332 greenX: 0.288 greenY: 0.601 (II) RADEON(0): blueX: 0.146 blueY: 0.065 whiteX: 0.313 whiteY: 0.329 (II) RADEON(0): Supported established timings: (II) RADEON(0): 720x400@70Hz (II) RADEON(0): 640x480@60Hz (II) RADEON(0): 640x480@75Hz (II) RADEON(0): 800x600@60Hz (II) RADEON(0): 800x600@75Hz (II) RADEON(0): 832x624@75Hz (II) RADEON(0): 1024x768@60Hz (II) RADEON(0): 1024x768@70Hz (II) RADEON(0): 1024x768@75Hz (II) RADEON(0): 1280x1024@75Hz (II) RADEON(0): 1152x870@75Hz (II) RADEON(0): Manufacturer's mask: 0 (II) RADEON(0): Supported standard timings: (II) RADEON(0): #0: hsize: 800 vsize 600 refresh: 85 vid: 22853 (II) RADEON(0): #1: hsize: 1024 vsize 768 refresh: 85 vid: 22881 (II) RADEON(0): #2: hsize: 1280 vsize 720 refresh: 60 vid: 49281 (II) RADEON(0): #3: hsize: 1280 vsize 960 refresh: 60 vid: 16513 (II) RADEON(0): #4: hsize: 1280 vsize 1024 refresh: 60 vid: 32897 (II) RADEON(0): #5: hsize: 1280 vsize 1024 refresh: 85 vid: 39297 (II) RADEON(0): #6: hsize: 1680 vsize 1050 refresh: 60 vid: 179 (II) RADEON(0): Supported detailed timing: (II) RADEON(0): clock: 119.0 MHz Image Size: 433 x 271 mm (II) RADEON(0): h_active: 1680 h_sync: 1728 h_sync_end 1760 h_blank_end 1840 h_border: 0 (II) RADEON(0): v_active: 1050 v_sync: 1053 v_sync_end 1059 v_blanking: 1080 v_border: 0 (II) RADEON(0): Ranges: V min: 48 V max: 85 Hz, H min: 30 H max: 94 kHz, PixClock max 170 MHz (II) RADEON(0): Monitor name: HP f2105 (II) RADEON(0): Serial No: CNK6160G74 (II) RADEON(0): EDID (in hex): (II) RADEON(0): 00ffffffffffff0022f0552601010101 (II) RADEON(0): 10100103802d1c78eecfb5a355499925 (II) RADEON(0): 105054a56f804559615981c081408180 (II) RADEON(0): 8199b30001017c2e90a0601a1e403020 (II) RADEON(0): 3600b10f1100001a000000fd0030551e (II) RADEON(0): 5e11000a202020202020000000fc0048 (II) RADEON(0): 502066323130350a20202020000000ff (II) RADEON(0): 00434e4b363136304737340a20200021 finished output detect: 1 finished all detect before xf86InitialConfiguration Dac detection success (II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0 (II) RADEON(0): Output: DVI-0, Detected Monitor Type: 3 (II) RADEON(0): EDID data from the display on output: DVI-0 ---------------------- (II) RADEON(0): Manufacturer: HWP Model: 2655 Serial#: 16843009 (II) RADEON(0): Year: 2006 Week: 16 (II) RADEON(0): EDID Version: 1.3 (II) RADEON(0): Digital Display Input (II) RADEON(0): Max Image Size [cm]: horiz.: 45 vert.: 28 (II) RADEON(0): Gamma: 2.20 (II) RADEON(0): DPMS capabilities: StandBy Suspend Off (II) RADEON(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 (II) RADEON(0): Default color space is primary color space (II) RADEON(0): First detailed timing is preferred mode (II) RADEON(0): redX: 0.640 redY: 0.332 greenX: 0.288 greenY: 0.601 (II) RADEON(0): blueX: 0.146 blueY: 0.065 whiteX: 0.313 whiteY: 0.329 (II) RADEON(0): Supported established timings: (II) RADEON(0): 720x400@70Hz (II) RADEON(0): 640x480@60Hz (II) RADEON(0): 640x480@75Hz (II) RADEON(0): 800x600@60Hz (II) RADEON(0): 800x600@75Hz (II) RADEON(0): 832x624@75Hz (II) RADEON(0): 1024x768@60Hz (II) RADEON(0): 1024x768@70Hz (II) RADEON(0): 1024x768@75Hz (II) RADEON(0): 1280x1024@75Hz (II) RADEON(0): 1152x870@75Hz (II) RADEON(0): Manufacturer's mask: 0 (II) RADEON(0): Supported standard timings: (II) RADEON(0): #0: hsize: 800 vsize 600 refresh: 85 vid: 22853 (II) RADEON(0): #1: hsize: 1024 vsize 768 refresh: 85 vid: 22881 (II) RADEON(0): #2: hsize: 1280 vsize 720 refresh: 60 vid: 49281 (II) RADEON(0): #3: hsize: 1280 vsize 960 refresh: 60 vid: 16513 (II) RADEON(0): #4: hsize: 1280 vsize 1024 refresh: 60 vid: 32897 (II) RADEON(0): #5: hsize: 1280 vsize 1024 refresh: 85 vid: 39297 (II) RADEON(0): #6: hsize: 1680 vsize 1050 refresh: 60 vid: 179 (II) RADEON(0): Supported detailed timing: (II) RADEON(0): clock: 119.0 MHz Image Size: 433 x 271 mm (II) RADEON(0): h_active: 1680 h_sync: 1728 h_sync_end 1760 h_blank_end 1840 h_border: 0 (II) RADEON(0): v_active: 1050 v_sync: 1053 v_sync_end 1059 v_blanking: 1080 v_border: 0 (II) RADEON(0): Ranges: V min: 48 V max: 85 Hz, H min: 30 H max: 94 kHz, PixClock max 170 MHz ...

I would be thankful for suggestions how to solve this problem or how to analyze it further.

Oh, and my /etc/X11/xorg.conf is the following:

Code:

Section "Module" Load "glx" Load "v4l" EndSection Section "Device" Identifier "Card0" Driver "radeon" EndSection

I had similar problems with an RV710. Only the DVI output would be affected though.
Setting DisplayPriority to high mitigated the problem somewhat, as did using radeonhd instead of radeon.

Try radeon from git master. I added new pll code fairly recently that solved a lot of the flickering problems on newer cards.

Thank you!

Setting the "DisplayPriority" "HIGH" option reduced the flickering but I still had black screens. (now about every minute)

Using the latest radeon driver from the git repository solved the problem for me.