Bug#465864: xserver-xorg-video-ati: xserver freezes the computer on startup

[Jiří Paleček]

On Thu, 28 Feb 2008 01:44:28 +0100, Alex Deucher <alexdeucher at gmail.com>  
wrote:

> On Wed, Feb 27, 2008 at 7:01 PM, Jiří Paleček <jpalecek at web.de> wrote:
>> On Wed, 27 Feb 2008 23:32:24 +0100, Alex Deucher <alexdeucher at gmail.com>
>>  wrote:
>>
>>
>>  > 2008/2/27 Jiri Palecek <jpalecek at web.de>:
>>  >>
>>  >> On Monday 25 February 2008 18:18:32 Alex Deucher wrote:
>>
>> >>  > There's something about 1400x1050 mode that the driver doesn't  
>> like.
>>  >>  > if you remove the preferred mode from your monitor section, does  
>> the
>>  >>  > server come up?  You might want to try another modeline for
>>  >> 1400x1050.
>>  >>
>>  >>  Indeed, the server started with the "PreferredMode" commented out.
>>  >> However,
>>  >>  changing the mode to this mode hang the computer.
>>  >>
>>  >>  What other modeline do you mean? I copied this one from earlier  
>> xorg,
>>  >> where it
>>  >>  was autodetected.
>>  >
>>  > try cvt:
>>  >
>>  > $ cvt 1400 1050 60
>>  > # 1400x1050 59.98 Hz (CVT 1.47M3) hsync: 65.32 kHz; pclk: 121.75 MHz
>>  > Modeline "1400x1050_60.00"  121.75  1400 1488 1632 1864  1050 1053
>>  > 1057 1089 -hsync +vsync
>>  >
>>  > $ cvt 1400 1050 75
>>  > # 1400x1050 74.87 Hz (CVT 1.47M3) hsync: 82.28 kHz; pclk: 156.00 MHz
>>  > Modeline "1400x1050_75.00"  156.00  1400 1504 1648 1896  1050 1053
>>  > 1057 1099 -hsync +vsync
>>
>>  OK. So I tried this:
>>
>>  Section "Monitor"
>>          Identifier      "Generic Monitor"
>>          Option          "DPMS"
>>          HorizSync       30-95
>>          VertRefresh     50-160
>>          Modeline        "1400x1050"  184.00  1400 1464 1656 1960  1050
>>  1051 1054 1100 +hsync +vsync
>>  # 1400x1050 84.96 Hz (CVT 1.47M3) hsync: 93.88 kHz; pclk: 179.50 MHz
>>  Modeline "1400x1050_85.00"  179.50  1400 1512 1656 1912  1050 1053 1057
>>  1105 -hsync +vsync
>>
>> # 1400x1050 74.87 Hz (CVT 1.47M3) hsync: 82.28 kHz; pclk: 156.00 MHz
>>  Modeline "1400x1050_75.00"  156.00  1400 1504 1648 1896  1050 1053 1057
>>  1099 -hsync +vsync
>>
>> # 1400x1050 59.98 Hz (CVT 1.47M3) hsync: 65.32 kHz; pclk: 121.75 MHz
>>  Modeline "1400x1050_60.00"  121.75  1400 1488 1632 1864  1050 1053 1057
>>  1089 -hsync +vsync
>>          Option          "PreferredMode" "1400x1050"
>>  EndSection
>>
>>  The 60 an 75 Hz variants work under 6.8.0, the 85 Hz doesn't.
>
> Strange.  you might try tweaking it slightly, maybe 87 Hz, etc.

OK. From these modes

# 1400x1050 81.89 Hz (CVT) hsync: 90.32 kHz; pclk: 171.25 MHz
Modeline "1400x1050_82.00"  171.25  1400 1504 1648 1896  1050 1053 1057  
1103 -hsync +vsync
# 1400x1050 86.89 Hz (CVT) hsync: 96.10 kHz; pclk: 183.75 MHz
Modeline "1400x1050_87.00"  183.75  1400 1512 1656 1912  1050 1053 1057  
1106 -hsync +vsync
# 1400x1050 83.89 Hz (CVT) hsync: 92.70 kHz; pclk: 175.75 MHz
Modeline "1400x1050_84.00"  175.75  1400 1504 1648 1896  1050 1053 1057  
1105 -hsync +vsync

87 Hz correctly fails (96 kHz is too much for a horizontal refresh), the  
other two work.

Regards
     Jiri Palecek