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low refreshrate

Open X52p opened this issue 9 years ago • 9 comments

I installed rpi-fbcp on my raspberry 2.0 with retropie (b3.0) and have the problem that i can see every frame slowly building up (takes about one second per frame!) so the display is unusable this way. I use a waveshare display 4" 480x320

I think the cause of that problem is the resolution of emulationstation (1920x1080) but i don´t know how to change that. I already saw videos of people running retropie smothly with fbcp on similar screens. hope you can help me.

X52p avatar Jul 02 '15 09:07 X52p

The HDMI resolution is set with options on boot in config.txt in raspbian I'm not sure about emulation station but it should be similar. I think your guess is correct setting the HDMI red to the waveshare red should speed it up you need to add a lines in /boot/config.text like set hdmi_group =1 Set hdmi_mode = 8

This is the rasbi an method but I don't see why they would have changed it On 2 Jul 2015 10:25, "X52p" [email protected] wrote:

I installed rpi-fbcp on my raspberry 2.0 with retropie (b3.0) and have the problem that i can see every frame slowly building up (takes about one second per frame!) so the display is unusable this way. I use a waveshare display 4" 480x320

I think the cause of that problem is the resolution of emulationstation (1920x1080) but i don´t know how to change that. I already saw videos of people running retropie smothly with fbcp on similar screens. hope you can help me.

— Reply to this email directly or view it on GitHub https://github.com/tasanakorn/rpi-fbcp/issues/7.

YamSoup avatar Jul 02 '15 10:07 YamSoup

Red=red on previous email On 2 Jul 2015 11:08, "Stephen Ford" [email protected] wrote:

The HDMI resolution is set with options on boot in config.txt in raspbian I'm not sure about emulation station but it should be similar. I think your guess is correct setting the HDMI red to the waveshare red should speed it up you need to add a lines in /boot/config.text like set hdmi_group =1 Set hdmi_mode = 8

This is the rasbi an method but I don't see why they would have changed it On 2 Jul 2015 10:25, "X52p" [email protected] wrote:

I installed rpi-fbcp on my raspberry 2.0 with retropie (b3.0) and have the problem that i can see every frame slowly building up (takes about one second per frame!) so the display is unusable this way. I use a waveshare display 4" 480x320

I think the cause of that problem is the resolution of emulationstation (1920x1080) but i don´t know how to change that. I already saw videos of people running retropie smothly with fbcp on similar screens. hope you can help me.

— Reply to this email directly or view it on GitHub https://github.com/tasanakorn/rpi-fbcp/issues/7.

YamSoup avatar Jul 02 '15 10:07 YamSoup

OK, i tested this right now, the resolution is changed but still the same problem.

X52p avatar Jul 02 '15 10:07 X52p

There is an upper limit on the fps a screen of this type can get around 12-15fps what's the refresh rate like now? On 2 Jul 2015 11:27, "X52p" [email protected] wrote:

OK, i tested this right now, the resolution is changed but still the same problem.

— Reply to this email directly or view it on GitHub https://github.com/tasanakorn/rpi-fbcp/issues/7#issuecomment-117992660.

YamSoup avatar Jul 02 '15 10:07 YamSoup

i have still about 1fps i can see the image building up line by line.

X52p avatar Jul 02 '15 10:07 X52p

This is not normal your driver setting are wrong. What have you got? Does it do the same out of fbcp? On 2 Jul 2015 11:52, "X52p" [email protected] wrote:

i have still about 1fps i can see the image building up line by line.

— Reply to this email directly or view it on GitHub https://github.com/tasanakorn/rpi-fbcp/issues/7#issuecomment-117996556.

YamSoup avatar Jul 02 '15 11:07 YamSoup

To elaborate what your describing is timing issue to the screen On 2 Jul 2015 12:07, "Stephen Ford" [email protected] wrote:

This is not normal your driver setting are wrong. What have you got? Does it do the same out of fbcp? On 2 Jul 2015 11:52, "X52p" [email protected] wrote:

i have still about 1fps i can see the image building up line by line.

— Reply to this email directly or view it on GitHub https://github.com/tasanakorn/rpi-fbcp/issues/7#issuecomment-117996556.

YamSoup avatar Jul 02 '15 11:07 YamSoup

i have this screen: http://www.amazon.de/4-Zoll-Touch-Screen-Konzipiert-Raspberry-Modell/dp/B00S7U1SLA/ref=sr_1_44?ie=UTF8&qid=1431087505&sr=8-44&keywords=Raspberry+Pi

i´dont know how to figur out wich settings are the right ones, i used settings with i found in a forum. were can i find the setting that i need?

X52p avatar Jul 02 '15 11:07 X52p

Sorry it took me ages to find the settings for my screen And its not the same one. Post in the RPI forum for help. the fact that it'd displaying anything at all means your close. On 2 Jul 2015 12:25, "X52p" [email protected] wrote:

i have this screen:

http://www.amazon.de/4-Zoll-Touch-Screen-Konzipiert-Raspberry-Modell/dp/B00S7U1SLA/ref=sr_1_44?ie=UTF8&qid=1431087505&sr=8-44&keywords=Raspberry+Pi

i´dont know how to figur out wich settings are the right ones, i used settings with i found in a forum. were can i find the setting that i need?

— Reply to this email directly or view it on GitHub https://github.com/tasanakorn/rpi-fbcp/issues/7#issuecomment-118004322.

YamSoup avatar Jul 02 '15 11:07 YamSoup