7:07 a.m.
Hi,
I want to decrease the refrash rate of the video to use less battery but I am
having difficulties...
I have F35 with KDE on a Dell G15 with Nvidia GA107M [GeForce RTX 3050 Ti
Mobile], the RPMFusion drivers and a 1920x1080 resolution (native).
In the "system settings-display" There is the possibility to change refresh
from
120Hz to 60Hz but it doesn't stick; I change it and "apply" but if I change
screen and go back to "display" it's again at 120Hz, I tried
"nvidia-settings"
but it has only info, not settings.
The program "xrandr" reports
1920x1080 120.00*+ 59.97 59.96 59.93
Is this the problem 59.97 not 60?
Any suggestions?
G
12:31 p.m.
On Sun, 31 Jul 2022 14:07:21 +0200
GianPiero Puccioni <gianpiero.puccioni(a)isc.cnr.it> wrote:
Hi,
I want to decrease the refrash rate of the video to use less battery
but I am having difficulties...
I have F35 with KDE on a Dell G15 with Nvidia GA107M [GeForce RTX
3050 Ti Mobile], the RPMFusion drivers and a 1920x1080 resolution
(native).
In the "system settings-display" There is the possibility to change
refresh from 120Hz to 60Hz but it doesn't stick; I change it and
"apply" but if I change screen and go back to "display" it's
again at
120Hz, I tried "nvidia-settings" but it has only info, not settings.
The program "xrandr" reports
1920x1080 120.00*+ 59.97 59.96 59.93
Is this the problem 59.97 not 60?
Any suggestions?
This certainly sounds like a bug. But, if it is related to nvidia,
only they will be able to fix it. Two suggestions.
Post on the rpmfusion list, they might have an idea about how to fix
this as they package the nvidia drivers.
Post at the nvidia site (I don't know it, but it should be available
with a search. It could also be known, and have a workaround.
1:11 a.m.
On 31 Jul 2022, at 13:07, GianPiero Puccioni
<gianpiero.puccioni(a)isc.cnr.it> wrote:
Hi,
I want to decrease the refrash rate of the video to use less battery but I am
having difficulties...
I have F35 with KDE on a Dell G15 with Nvidia GA107M [GeForce RTX 3050 Ti
Mobile], the RPMFusion drivers and a 1920x1080 resolution (native).
In the "system settings-display" There is the possibility to change refresh
from
120Hz to 60Hz but it doesn't stick; I change it and "apply" but if I
change
screen and go back to "display" it's again at 120Hz, I tried
"nvidia-settings"
but it has only info, not settings.
The program "xrandr" reports
1920x1080 120.00*+ 59.97 59.96 59.93
Is this the problem 59.97 not 60?
That is usual, it’s called 60 but is in fact the NTSC refresh rate.
It’s offset from 60Hz to avoid flicker effects from lighting I understand.
Barry
Any suggestions?
G
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9:50 a.m.
On Mon, 2022-08-01 at 07:11 +0100, Barry wrote:
That is usual, it’s called 60 but is in fact the NTSC refresh rate.
It’s offset from 60Hz to avoid flicker effects from lighting I
understand.
If it was exactly the same as mains, you'd get no flickering effects
(the very slow phase differences would be very minor). If it's a
slightly different frequency, that's when flickering can be more
noticeable.
NTSC isn't exactly 60 Hertz because they wanted a precise relationship
between vert and horizontal sync, and colour subcarrier and sound
subcarrier with minimal interference between each other. Think of it
like a series of cogs meshed together, rather than a number of free-
running motors *trying* to spin precisely in time with each other.
NTSC is almost 60 Hertz because it's barely any different from the B&W
60 Hertz system before it. It was 60 Hertz (same as mains frequency)
to avoid flicker with the mains powered lights. Back then, some
cameras were quite sensitive to such things. Much more than people
might notice mains hum issues on their television sets.
50 Hertz countries got 50 Hertz television for the same reason.
I've often wondered what film studios did. Did they use DC lights?
Did they have special AC generators running at a multiple of film frame
rates?
Film's normally shot at 24 frames per second. I know 60 Hertz cameras
don't like our 50 Hertz lighting, I've had to film under those
circumstances and the strobing can be migraine-inducing. I can't
imagine filming at 24 Hertz under 60 Hertz lighting would be any
better.
--
uname -rsvp
Linux 3.10.0-1160.71.1.el7.x86_64 #1 SMP Tue Jun 28 15:37:28 UTC 2022 x86_64
Boilerplate: All unexpected mail to my mailbox is automatically deleted.
I will only get to see the messages that are posted to the mailing list.
2:26 p.m.
On 31/07/2022 13:07, GianPiero Puccioni wrote:
Hi,
I want to decrease the refrash rate of the video to use less battery but
I am
having difficulties...
I have F35 with KDE on a Dell G15 with Nvidia GA107M [GeForce RTX 3050 Ti
Mobile], the RPMFusion drivers and a 1920x1080 resolution (native).
In the "system settings-display" There is the possibility to change
refresh from
120Hz to 60Hz but it doesn't stick; I change it and "apply" but if I
change
screen and go back to "display" it's again at 120Hz, I tried
"nvidia-settings"
but it has only info, not settings.
The program "xrandr" reports
1920x1080 120.00*+ 59.97 59.96 59.93
Is this the problem 59.97 not 60?
Any suggestions?
G
Resending to list:
I think I may have seen something like this in the past, with the gui
reporting a possible refresh rate as an integer but not reinterpreting
that as the appropriate floating point value when trying to use it as a
setting.
Have you tried setting with xrandr?
xrandr --output <output> --rate 59.97
looks as if it might help, if I knew what to put as <output>
And the archlinux xrandr wiki looks as if it could be useful.
John P
3:53 a.m.
On 01/08/2022 21:26, John Pilkington wrote:
On 31/07/2022 13:07, GianPiero Puccioni wrote:
> Hi,
>
> I want to decrease the refrash rate of the video to use less battery but I am
> having difficulties...
>
> I have F35 with KDE on a Dell G15 with Nvidia GA107M [GeForce RTX 3050 Ti
> Mobile], the RPMFusion drivers and a 1920x1080 resolution (native).
>
> In the "system settings-display" There is the possibility to change refresh
from
> 120Hz to 60Hz but it doesn't stick; I change it and "apply" but if I
change
> screen and go back to "display" it's again at 120Hz, I tried
"nvidia-settings"
> but it has only info, not settings.
> The program "xrandr" reports
> 1920x1080 120.00*+ 59.97 59.96 59.93
>
> Is this the problem 59.97 not 60?
>
> Any suggestions?
>
> G
Resending to list:
I think I may have seen something like this in the past, with the gui reporting
a possible refresh rate as an integer but not reinterpreting that as the
appropriate floating point value when trying to use it as a setting.
Have you tried setting with xrandr?
xrandr --output <output> --rate 59.97
looks as if it might help, if I knew what to put as <output>
And the archlinux xrandr wiki looks as if it could be useful.
As xrandr reports
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis)
1920x1080 120.00*+ 59.97 59.96 59.93
I used "xrandr --output eDP-1 --mode 1920x1080 -r 59.97"
the answer, after a couple of second of black screen(scary!)
xrandr: Configure crtc 0 failed
I did it as root but maybe I need some kind of permission?
G
9:55 a.m.
On 02/08/2022 09:53, GianPiero Puccioni wrote:
On 01/08/2022 21:26, John Pilkington wrote:
> On 31/07/2022 13:07, GianPiero Puccioni wrote:
>> Hi,
>>
>> I want to decrease the refrash rate of the video to use less battery
>> but I am
>> having difficulties...
>>
>> I have F35 with KDE on a Dell G15 with Nvidia GA107M [GeForce RTX
>> 3050 Ti
>> Mobile], the RPMFusion drivers and a 1920x1080 resolution (native).
>>
>> In the "system settings-display" There is the possibility to change
>> refresh from
>> 120Hz to 60Hz but it doesn't stick; I change it and "apply" but if
I
>> change
>> screen and go back to "display" it's again at 120Hz, I tried
>> "nvidia-settings"
>> but it has only info, not settings.
>> The program "xrandr" reports
>> 1920x1080 120.00*+ 59.97 59.96 59.93
>>
>> Is this the problem 59.97 not 60?
>>
>> Any suggestions?
>>
>> G
>
> Resending to list:
>
> I think I may have seen something like this in the past, with the gui
> reporting a possible refresh rate as an integer but not reinterpreting
> that as the appropriate floating point value when trying to use it as
> a setting.
>
> Have you tried setting with xrandr?
>
> xrandr --output <output> --rate 59.97
>
> looks as if it might help, if I knew what to put as <output>
>
> And the archlinux xrandr wiki looks as if it could be useful.
>
As xrandr reports
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis
y axis) 1920x1080 120.00*+ 59.97 59.96 59.93
I used "xrandr --output eDP-1 --mode 1920x1080 -r 59.97"
the answer, after a couple of second of black screen(scary!)
xrandr: Configure crtc 0 failed
I did it as root but maybe I need some kind of permission?
G
I suppose it might be worth trying the other values given by xrandr.
nVidia used to allocate whole-number labels to non-integer frame rates,
but that was years ago and much has changed since then. This ref was
authoritative at the time, in a TV context, and might perhaps suggest
something:
https://www.mythtv.org/wiki/User_Manual:JudderFree
I don't know if you are using Wayland or X11, and what difference that
might make. This is probably the official nVidia reference document for
your driver, and most of it will apply to the rpmfusion build. It's not
easy reading and I haven't seen an obvious fix for your problem.
http://us.download.nvidia.com/XFree86/Linux-x86_64/515.57/README/wayland-...
John
633
days inactive
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6 comments
5 participants
participants (5)
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Barry -
GianPiero Puccioni -
John Pilkington -
stan -
Tim