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Fix typos

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Wesley Moore 2020-05-30 11:21:12 +10:00
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v2/content/posts/2020/linux-amdgpu-pixel-format.md
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@ -2,8 +2,8 @@
title = "Setting the amdgpu HDMI Pixel Format on Linux" title = "Setting the amdgpu HDMI Pixel Format on Linux"
date = 2020-05-30T08:48:30+10:00 date = 2020-05-30T08:48:30+10:00
#[extra] [extra]
#updated = 2020-03-27T21:53:53+11:00 updated = 2020-05-30T11:21:30+10:00
+++ +++
This week I discovered some details of digital display technology that I was This week I discovered some details of digital display technology that I was
@ -41,8 +41,8 @@ get 4K 60Hz on the newly HDMI connected display I immediately noticed lag. I
even captured it in a slow motion video on my phone to prove I wasn't going even captured it in a slow motion video on my phone to prove I wasn't going
crazy. Despite `xrandr` reporting a 60Hz connection it seemed as though it was crazy. Despite `xrandr` reporting a 60Hz connection it seemed as though it was
updating at less than that. This led me to compare the menus of the two updating at less than that. This led me to compare the menus of the two
displays. It was here I noticed that good one reported an input colour format displays. It was here I noticed that the good one reported an input colour
of RGB, than the other [YPbPr]. format of RGB, the other [YPbPr].
This led to more reading about pixel formats in digital displays — a thing I This led to more reading about pixel formats in digital displays — a thing I
was not previously aware of. Turns out that ports like HDMI support multiple was not previously aware of. Turns out that ports like HDMI support multiple
@ -58,11 +58,12 @@ support changing it][amdgpu-bug].
In trying various suggestions in that bug report I rebooted a few times and the In trying various suggestions in that bug report I rebooted a few times and the
lag mysteriously went away but the pixel format remained the same. At this lag mysteriously went away but the pixel format remained the same. At this
point I noticed the display had a grey cast to it especially on areas of white. point I noticed the display had a grey cast to it, especially on areas of
This had been present on the other display when it was connected via HDMI too white. This had been present on the other display when it was connected via
but I just put it down to being a couple of years older. With my new pixel HDMI too but I just put it down to being a couple of years older than the other
format knowledge in hand I knew this was was the source of lack of brightness. one. With my new pixel format knowledge in hand I knew this was was the source
So, I was still determined to find a way to force the HDMI output to RGB. of lack of brightness. So, I was still determined to find a way to force the
HDMI output to RGB.
### The Fix ### The Fix