Blurry Display (Panasonic TC-L42E60)

[Steven Blatchford]

On 06:43 Wed 10 Jul, James Cloos wrote:
>>>>>> "SB" == Steven Blatchford <sblatchford at gmail.com> writes:
>
>SB> new 42 - http://sprunge.us/LASN
>
>Looking at that, I may have misread the previous log.
>
>In any case, that log shows:
>
>[    40.880] (II) intel(0): Output LVDS1 using initial mode 1366x768
>[    40.880] (II) intel(0): Output HDMI2 using initial mode 1920x1080
>...
>[    40.883] (II) intel(0): Allocated new frame buffer 1920x1080 stride 7680, tiled
>
>and:
>
>[    40.880] (**) intel(0): DPI set to (52, 52)
>
>52 dpi at 1920x1080 is 42 inches.
>
>There is also:
>
>[    40.891] (WW) intel(0): Option "PreferredMode" is not used
>
>so it didn't need that to do 1080p on the tv.
>
>This log shows hdmi2 connected to a tv which has manufacturer MEI, which
>is Panasonic.  I forget already whether the Panasonic was new or old.

The Panasonic is the new 42" TV.

>If so, maybe the bluris the opposite of what I earlier presumed.  Is the
>system trying to mirror the internal display on the tv?  If so, and if
>it keeps the tv in its native 1080p, then it would have to use the gpu
>to scale the 1366x768 to 1920x1080.  Perhaps the old 42 was receiving
>1366x768 and doing a better job scaling that than the gpu does?
>
>Setting the external, eg, leftOf the internal ought to avoid that.
>
>As should disabling the interal when the external is connected.

These are the commands I'm running in a script:
xrandr --output VGA1  --off
xrandr --output LVDS1 --off
xrandr --output HDMI2 --mode 1920x1080


>But it looks like the panasonic is working as it should.
>
>Oh, and look in a magnifying glass at the 42's pixels.  Many at that
>size use bayer pattern sub-pixels.  Avoid sub-pixel fonts at all costs
>on such a display.  Plain grayscale anti-aliasing is fine; sub-pixel is NOT.

I'm using a monospace bitmap font called gohufont in terminals.

-steve