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[GH-ISSUE #193] Freezing when using NVIDIA GT 650/750M #142

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opened 2026-05-05 05:15:26 -06:00 by gitea-mirror · 6 comments

gitea-mirror commented

2026-05-05 05:15:26 -06:00

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Originally created by @khal3d on GitHub (Apr 1, 2020).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/193

Hi,

My Dell P2715Q display and the MacBook screen freeze when I open the app and while it's connected to the mDP <> DP, and it comes back to work right after removing the cable and closing the app. This issue doesn't happen if I used the same screen with the HDMI port.

I have tried using ddcctl command, and it's working perfectly.

Displays

Display	GPU	Resolution
Built-in Display	NVDIA GeForce GT 750M 2 GB Graphics	15.4" (28880 x 1800)
Dell P2715Q Display	NVDIA GeForce GT 750M 2 GB Graphics	27" (3840 x 2160) - 4k

Device

Device	GPU	OS	MonitorControl
MacBook Pro (Retina, 15-inch, Late 2013)	NVIDIA GeForce GT 750M 2 GB Intel Iris Pro 1536 MB	Catalina 10.15.3	1.7.1 (Build 574)

Originally created by @khal3d on GitHub (Apr 1, 2020). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/193 Hi, My Dell P2715Q display and the MacBook screen freeze when I open the app and while it's connected to the mDP <> DP, and it comes back to work right after removing the cable and closing the app. This issue doesn't happen if I used the same screen with the HDMI port. I have tried using `ddcctl` command, and it's working perfectly. ### Displays | Display | GPU | Resolution | |:-------------------: |:-----------------------------------: |:--------------------: | | Built-in Display | NVDIA GeForce GT 750M 2 GB Graphics | 15.4" (28880 x 1800) | | Dell P2715Q Display | NVDIA GeForce GT 750M 2 GB Graphics | 27" (3840 x 2160) - 4k | ### Device | Device | GPU | OS | MonitorControl | |------------------------------------------ |---------------------------------------------------- |------------------ |------------------- | | MacBook Pro (Retina, 15-inch, Late 2013) | NVIDIA GeForce GT 750M 2 GB Intel Iris Pro 1536 MB | Catalina 10.15.3 | 1.7.1 (Build 574) |

gitea-mirror

2026-05-05 05:15:26 -06:00

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gitea-mirror commented

2026-05-05 05:15:34 -06:00

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@JoniVR commented on GitHub (Apr 2, 2020):

Seems to be an issue relating to the NVIDIA 750 card needing a different minReplyDelay I think.. judging that there's already an issue like this #125 also having the Nvidia card. Can you post this in #82?

/cc @reitermarkus

@JoniVR commented on GitHub (Apr 2, 2020): Seems to be an issue relating to the NVIDIA 750 card needing a different `minReplyDelay` I think.. judging that there's already an issue like this #125 also having the Nvidia card. Can you post this in #82? /cc @reitermarkus

gitea-mirror commented

2026-05-05 05:15:36 -06:00

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@jjeffrey01 commented on GitHub (Apr 5, 2020):

Seconding this, immediately freezes my 750M based system as well.

@jjeffrey01 commented on GitHub (Apr 5, 2020): Seconding this, immediately freezes my 750M based system as well.

gitea-mirror commented

2026-05-05 05:15:38 -06:00

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@kumowoon1025 commented on GitHub (Apr 9, 2020):

The 650M and 750M are the same chip, so @SongHoang might have the same issue. I tried with a 650M laptop with no issues over HDMI, I'll update when I find a mDP - DP adapter/cable, I didn't realize TB cables didn't work as mDP cables o_o

@kumowoon1025 commented on GitHub (Apr 9, 2020): The 650M and 750M are the same chip, so @SongHoang might have the same issue. I tried with a 650M laptop with no issues over HDMI, I'll update when I find a mDP - DP adapter/cable, I didn't realize TB cables didn't work as mDP cables o_o

gitea-mirror commented

2026-05-05 05:15:40 -06:00

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@kumowoon1025 commented on GitHub (Apr 13, 2020):

My god, the freeze, or rather, the immediate complete grind to halt, is real. 15-inch MacBook Pro (Retina, Mid 2012). Makes collecting logs a pain, I'll still see if there's anything in there though.

I'm pretty sure I also have an iMac with a 755M, again, exact same GPU, almost as crappy but doesn't lose when it comes to instability. Catalina beta install killed the EFI though, so I'll either need to wait out the pandemic or program it myself, this does seem to be an orthogonal issue from problems with HDMI connections though.

@kumowoon1025 commented on GitHub (Apr 13, 2020): My god, the freeze, or rather, the immediate complete grind to halt, is real. 15-inch MacBook Pro (Retina, Mid 2012). Makes collecting logs a pain, I'll still see if there's anything in there though. I'm pretty sure I also have an iMac with a 755M, again, exact same GPU, almost as crappy but doesn't lose when it comes to instability. Catalina beta install killed the EFI though, so I'll either need to wait out the pandemic or program it myself, this does seem to be an orthogonal issue from problems with HDMI connections though.

gitea-mirror commented

2026-05-05 05:15:42 -06:00

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@tormave commented on GitHub (May 6, 2020):

I have the hanging issue as well. MBP 15 with GT650M, Dell U2717D connected via mini-Displayport -> Displayport cable, latest Catalina 10.15.4. Just got the external monitor and it's too bright when it gets darker. Can of course use the monitor menu, but it's a pain as it's deep in the clickety click menu.

I was so happy to find this app I crashed my laptop 3 times before believing it's MonitorControl that killed it. Hope I had read the instruction of removing the monitor cable before rebooting... Despite it doesn't work for me, awesome that you've developed this app!

@tormave commented on GitHub (May 6, 2020): I have the hanging issue as well. MBP 15 with GT650M, Dell U2717D connected via mini-Displayport -> Displayport cable, latest Catalina 10.15.4. Just got the external monitor and it's too bright when it gets darker. Can of course use the monitor menu, but it's a pain as it's deep in the clickety click menu. I was so happy to find this app I crashed my laptop 3 times before believing it's MonitorControl that killed it. Hope I had read the instruction of removing the monitor cable before rebooting... Despite it doesn't work for me, awesome that you've developed this app!

gitea-mirror commented

2026-05-05 05:15:44 -06:00

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@stale[bot] commented on GitHub (Aug 3, 2021):

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require attention? This issue may be closed if no further activity occurs. Thank you for your contributions.

@stale[bot] commented on GitHub (Aug 3, 2021): Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require attention? This issue may be closed if no further activity occurs. Thank you for your contributions.