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<orccoin>
Hi,
<orccoin>
I have two PC connected to one single monitor, the fedora PC is connected to DP port and the windows PC is connected to the HDMI port, the minitor is set in "left-right" PIP mode, the left to display signals from DP port and the right to display signals from HDMI port, which means the left half and the right half of the minitor are from different sources.
<orccoin>
When I change the brightness of the windows PC, only the brightness of the right half changes, but when I change the brightness of the fedora PC (KDE -> Settings -> search Brightness), the brightness of the whole monitor changes, this is not what I want.
<orccoin>
I only want the brightness of the left half of the minitor being changed, which I suppose is "per-GPU/per-OS/per-FB" adjustment, "per-monitor" adjustment requires display vendor specific API/ I suppose. Anyone familiar with this matter can point me to the source of how brightness of fedora is controlled exactly?
<clever>
orccoin: i think what windows is doing, is just applying a shader to the image before it dumps it out HDMI, so the image the monitor receives is darker
<clever>
but i suspect fedora is using DDC (a protocol over the edid lines), to request that the monitor adjust the actual backlight brightness
<orccoin>
yes, but any reference in the source code?
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<bslsk06>
KDE/powerdevil - Manages the power consumption settings of a Plasma shell (12 forks/36 stargazers/NOASSERTION)
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<pjals>
Hello. I'm initializing my serial (first setting modem control to ready, then disabling interrupts, setting baud) but when I do the loopback check, QEMU refuses to believe the serial is in loopback mode even though PORT+4 = 0b10001, and I need to manually type the loopback test character back in. The weirdest thing is that I can type into the serial and the OS recognizes it (by polling), but when the OS
<pjals>
writes into the serial, nothing appears.
<zid`>
Time to throw up a log of your writes and then get me to find some serial docs to compare, I'd wager
<zid`>
also are we certain qemu emulates the modem part?
<pjals>
I'm not sure, but I'm desperately doing any handshake I can find to get the serial initialized. (since QEMU does support serial and linux can use QEMU's serial)
<zid`>
That appears to be 64 and you wanted 128, I believe
<zid`>
(fuck binary constants)
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<heat>
do not use binary constants
<heat>
like seriously, why would you
<heat>
(1 << 7) is a trillion times more readable version of 1 with 7 0's
<zid`>
and 0x80 is very recognisable as "top bit set in a byte"
<FireFly>
or 0x80 tbh
<zid`>
so literally everything else is better
<heat>
actually, not everything
<heat>
you could write it in octal
<zid`>
octal is better if your bits line up right
<Ermine>
0x80 is not the top bit
<Ermine>
0xF0 is
<heat>
what
<zid`>
Incorrect
<zid`>
F is 15
<Ermine>
ah, yes
<heat>
0x80 is most definitely the top bit
<FireFly>
that's the top nibble
<zid`>
15 is odd, therefore must have at least 2 bits set lol
<Ermine>
my bad
<FireFly>
or well a mask for the top nibble
<Ermine>
sorry
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<heat>
NO
<FireFly>
'sokay, happens
<heat>
YOU HAVE BEEN BANNED FROM #OSDEV
<zid`>
heat: Can we switch to megahex, I'm tired of typing 0xFFFFFFFF80000000
<heat>
what's megahex?
<zid`>
base64 pointers
<heat>
sgtm
<pjals>
Fixing the DLAB bit still does not fix it, and it still freezes at the same place (waiting for a response) :/ (also i will probably tone down the binary constants soon)
<zid`>
pjals: I'd go through all your constants and make sure
<heat>
tbqh i've reached a point where i can type 0xffffffff80000000 without counting
<zid`>
I found a bug already, there's likely more
<zid`>
heat: I still go 1234567811234567
<pjals>
zid`: I assume (the bug is) related to constants?
<heat>
maybe?
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<zid`>
very probably
<zid`>
also it's weird that you enable the uart as the *first* thing
<zid`>
rather than last
<zid`>
just generally
<heat>
try -trace uart8250* or -trace serial* or -trace uart16650* or whatever they call it
<heat>
or look through the qemu code, it's probably readable and will straight up tell you if they implement that or not
<zid`>
given the osdev page example code uses it
<zid`>
I assume it works in qemu
<zid`>
idk if it still delivers interrupts, but they read back what they write after setting it to loopback
<bslsk06>
github.com: qemu/hw/char/serial.c at master · qemu/qemu · GitHub
<zid`>
yea it just straight calls its own generic receive func
<heat>
ok it seems you want to pass -trace serial* to qemu to get more debogging data
<zid`>
recv() { if(loopbacks) send();
<heat>
i don't do any of that shtick, i just use a c p i
<heat>
these serial parts all have nice PNP strings you can use
<zid`>
cock-parsley investigation
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<the_oz>
0b fuck heat
<heat>
what
<the_oz>
I was scrolled up ffs
<the_oz>
binary constants because you hate it
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<the_oz>
multiple bits at once
<jjuran>
zid`: What are the two non-alnum characters in megahex? I'm guessing '_', and what else?
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<heat>
the egyptian penis emoji, ofc
<heat>
𓂸
<pjals>
The first is '\0' :P
<zid`>
The canonical is =
<zid`>
but that'd be awkward
<zid`>
maybe we should use ¦ and ¬
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<zid`>
The real question is what should the prefix be
<heat>
i vote for 𓂸 and 💀
<zid`>
0sex?
<karenw>
What did I log in to?
<zid`>
karenw: heat's natural affiliation for penis emojis
<zid`>
he brings them up as often as he can shoehorn it into a convo
<karenw>
q p
<heat>
what did bro log in to 💀
<the_oz>
urlsafe drastically limits
<heat>
the skull emoji might just be my favourite actually
<heat>
forgor energy
<karenw>
:white_flag::zwj::transgender: is the best emoji obviously
<zid`>
what's a zwj
<Ermine>
what did unicode people think of when adding that penis emoji?
<Matt|home>
o\
<karenw>
Zero width joiner. (The trans flag is 3 code points. So my client mangles it and I can't actually post it. It may work for your client: 🏳️⚧️)
<zid`>
hah
<zid`>
I get.. france flag, prince with tits icon
<zid`>
Oh it's a skin tone modifier but for a flag?
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<zid`>
heat what's arroz con maiz in pt
<heat>
idk
<zid`>
just translate it word for word?
<sortie>
compressed rice with compressed maise?
<zid`>
or did you forget pt :o
<zid`>
and where on earth did sortie get 'compressed' from, and an 's' in maize
<sortie>
z for deflate
<zid`>
oh god
<zid`>
sortie: That one deserves you do some nomitive determinism
<heat>
what's maiz?
<zid`>
maize
<zid`>
shockingly
<heat>
arroz = arroz
<heat>
con = com
<heat>
maiz = whatever that is in portuguese
<zid`>
milho
<heat>
ok there you go
<heat>
arroz com milho
<zid`>
heat: arroz com milho for dinner, B+
<kof673>
re: min wikipedia is not worse than anything else, which is a very low bar buried under the ocean, but you must ruthlessly cross-reference. https://0x0.st/s/pIctf6NYXPuKa9z4S6qNrA/XkKB.txt
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