Mailinglist Archive: radeonhd (308 mails)

["Alex Deucher" <alexdeucher@xxxxxxxxx>]

On Mon, Mar 17, 2008 at 3:55 PM, Leif Gruenwoldt <leifer@xxxxxxxxx> wrote:
> On Mon, Mar 17, 2008 at 3:40 PM, Luc Verhaegen <libv@xxxxxxxxx> wrote:
>  >
>  > On Mon, Mar 17, 2008 at 11:47:11AM -0400, Leif Gruenwoldt wrote:
>  >  > I can't seem to get the native resolution to display properly on my
>  >  > external display. The native is 1920x1200 @60 but using xrandr it
>  >  > defaults to 1680x1050 @ 59 and manually setting it to native causes it
>  >  > to go black.
>  >  >
>  >  > $ xrandr
>  >  > Screen 0: minimum 320 x 200, current 3360 x 1050, maximum 3600 x 1200
>  >  > VGA_1 disconnected
>  >  > PANEL connected 1680x1050+0+0 444mm x 277mm
>  >  >    1680x1050      59.9*+
>  >  > DVI-D_1 connected 1680x1050+1680+0 519mm x 324mm
>  >  >    1920x1200      60.0 +
>  >  >    1600x1200      59.9
>  >  >    1680x1050      59.9*
>  >  >    1600x1000      59.9
>  >  >    1280x1024      84.9     75.0     59.9
>  >  >    1280x960       59.9
>  >  >    1152x864       75.0
>  >  >    1152x720       59.9
>  >  >    1024x768       75.1     60.0
>  >  >    832x624        74.6
>  >  >    800x600        75.0     60.3
>  >  >    640x480        75.0     60.0
>  >  >    720x400        70.1
>  >  >
>  >  > Manually setting it to the native causes the display to go black.
>  >  >
>  >  > $ xrandr --output DVI-D_1 --mode 1920x1200
>  >  >
>  >  >
>  >  >
>  >  > Some details about my hardware:
>  >  > - Laptop (HP 8510p with ATI 2600HD)
>  >  > - External 24" LCD (HP LP2465) connected on docking station DVI
>  >  >
>  >  >
>  >  > The following info from my Xorg.0.log seems highly suspicious:
>  >  >
>  >  > (II) RADEONHD(0): Not using mode "1920x1200" (mode clock too high)
>  >  >
>  >  > and then later on down in the log
>  >  >
>  >  > (II) RADEONHD(0): Not using default mode "1920x1200" (bad mode
>  >  > clock/interlace/doublescan)
>  >  >
>  >  > See attachments for Xorg.0.log and Xorg.conf.
>  >  >
>  >  > Any help appreciated.
>  >  >
>  >  > Leif.
>  >
>  >  Hrm... Why isn't 1920x1200@154MHz chosen? It validates perfectly...
>  >
>  >  > (II) RADEONHD: version 1.1.0, built from dist of git branch 
> fedora/snapshot,
>  >   commit 256b6816
>  >
>  >  This is an unknown SHA-ID... ndim, do you have any idea where this one
>  >  comes from?
>
>  I'm running Fedora 8 with latest yum updates.
>
>
>  >
>  >  > (--) Chipset M76 found
>  >  > (II) RADEONHD(0): Connector[0] {RHD_CONNECTOR_VGA, "VGA CRT1", 
> RHD_DDC_0, RHD_HPD_NONE, { RHD_OUTPUT_DACA, RHD_OUTPUT_NONE } }
>  >  > (II) RADEONHD(0): Connector[1] {RHD_CONNECTOR_PANEL, "LVDS LCD1", 
> DDC_NONE, RHD_HPD_NONE, { RHD_OUTPUT_LVTMA, RHD_OUTPUT_NONE } }
>  >  > (II) RADEONHD(0): Connector[2] {RHD_CONNECTOR_DVI, "DUAL_LINK_DVI_D 
> DFP2", RHD_DDC_1, RHD_HPD_0, { RHD_OUTPUT_NONE, RHD_OUTPUT_TMDSA } }
>  >  > (II) RADEONHD(0): Connector[3] {RHD_CONNECTOR_DVI, "HDMI_TYPE_A DFP1", 
> RHD_DDC_1, RHD_HPD_1, { RHD_OUTPUT_NONE, RHD_OUTPUT_NONE } }
>  >
>  >  Hrm... interesting connector table...
>  >
>  >  This is the preferred mode for the external monitor:
>  >
>  >  > (II) RADEONHD(0): clock: 154.0 MHz   Image Size:  519 x 324 mm
>  >  > (II) RADEONHD(0): h_active: 1920  h_sync: 1968  h_sync_end 2000 
> h_blank_end 2080 h_border: 0
>  >  > (II) RADEONHD(0): v_active: 1200  v_sync: 1203  v_sync_end 1209 
> v_blanking: 1235 v_border: 0
>  >  > (II) RADEONHD(0): Ranges: V min: 48  V max: 85 Hz, H min: 30  H max: 94 
> kHz, PixClock max 170 MHz
>  >
>  >  Yet RandR chooses something else:
>  >
>  >  > (II) RADEONHD(0): Output PANEL using initial mode 1680x1050
>  >  > (II) RADEONHD(0): Output DVI-D_1 using initial mode 1680x1050
>
>  Ya this is really odd. After finnally getting a modeline to work
>  properly I added
>
>  Modeline    "1920x1200_60.00"  162  1920 2048 2256 2592  1200 1201 1204 1242
>  Option      "Preferred Mode" "1920x1200_60.00"
>
>  But it still uses initial mode of 1680x1050 for  both displays. So I
>  manually set it to the preferred after desktop login.

Since you have multiple displays connected randr will select the
closest thing it can to identical modes on each output.  Since both
your panel and your monitor support 1680x1050, that mode is being
selected.

Alex
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