I recently purchased an Acer AL1916W, a nice Widescreen TFT with an unusual resolution of 1440×900 px, which was at first a challenge to configure. I tried various setups in xorg.conf, en- and disabled DDC, even wrote my own modelines. The best\u00a0I got was an 1440×900 resolution with black broders (~ 3 cm) on the left and right.<\/p>\n
Until\u00a0i\u00a0read\u00a0the\u00a0manual\u00a0(RTFM!),\u00a0which\u00a0I couldn’t find at the Acer Worldwide Homepage, so i provide it here: Acer AL1916W Handbook<\/a>. At the end of the manual the reference signalmodes are listed:<\/p>\n Display Mode: WXGA 1440×900 At first i was puzzeld, because the\u00a0refreshrate isn’t an integer (as I thought it should be). Nevertheless I used gtf, a small xorg-tool to calculate VESA Modlines, with this values:<\/p>\n # 1440x900 @ 55.89 Hz (GTF) hsync: 51.97 kHz; pclk: 98.96 MHz Using this ModeLine in xorg.conf, the Acer detects a 60 Hz refresh rate, and the auto-adjust works fine, the borders are gone.<\/p>\n","protected":false},"excerpt":{"rendered":" I recently purchased an Acer AL1916W, a nice Widescreen TFT with an unusual resolution of 1440×900 px, which was at first a challenge to configure. I tried various setups in xorg.conf, en- and disabled DDC, even wrote my own modelines. The best\u00a0I got was an 1440×900 resolution with black broders (~ 3 cm) on the … Continue reading Acer AL1916W: running Xorg at 1440×900<\/span>
\nHorizontal Frequency (kHz): 55.935
\nVertical Frequency (Hz): 55.887
\nPixel Frequency (MHz): 106.5
\nSYNC Polarity (H\/V): -\/+<\/p><\/blockquote>\n~ # gtf 1440 900 55.887<\/p>\n
\nModeline \"1440x900_55.89\" 98.96 1440 1520 1672 1904 900 901 904 930 -HSync +Vsync<\/code><\/p><\/blockquote>\n