[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50

2019-12-13 Thread David Coronel
I just found out about this. I wanted to get rid of the screen tearing that I observed on my Nitro AN515-53 laptop running Ubuntu 18.04.3 LTS with NVIDIA GeForce GTX 1050 Mobile GPU. I used https://askubuntu.com/a/020 and set nvidia_drm modeset=1 but then my external monitors didn't work

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50

2019-06-20 Thread Tim Richardson
I should add that the "fix" I reported is only a narrow fix. The internal display works. But external displays don't work if you have nvidia drivers, gdm3 and if you are using modeset=1 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50

2017-09-04 Thread Daniel van Vugt
Closed per comment #20. Discussion continues in bug 1714881... ** Changed in: gdm3 (Ubuntu) Status: New => Invalid ** Changed in: nvidia-graphics-drivers-375 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Desktop Bugs,

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50

2017-09-04 Thread Tim Richardson
Daniel, with the latest 17.10 the nvidia problems are now more specific and easier to reproduce. Neither of my Thinkpads gets to the login screen in discrete Nvidia mode iff modeset=1 is used. In hybrid graphics, the session starts, I suspect this is due to the intel driver being available.

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50

2017-09-03 Thread Daniel van Vugt
** Summary changed: - gdm3 nvidia modeset=1 is broken, external screens don't work + gdm3 nvidia modeset=1 is broken, external screens don't work on a Thinkpad p50 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu.

Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-09-01 Thread Tim Richardson
Good news from my side; I just updated everything on th ThinkPad W520, an old Optimus laptop. the Uubntu 17.10 desktop now works with hybrid graphics, prime sync and gdm3 using the latest updates (pre-release channel). I have not added any PPAs so it's using the 375 driver currently in the 17.10

Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-28 Thread Tim Richardson
Thanks Doug, that bug report is exactly as the nvidia forum so you and I are doing the same thing. On 28 August 2017 at 02:41, Doug McMahon <1706...@bugs.launchpad.net> wrote: > bug reports aren't suitable for troubleshooting but anyway I do as shown > here >

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-27 Thread Doug McMahon
bug reports aren't suitable for troubleshooting but anyway I do as shown here https://ubuntuforums.org/showthread.php?t=2365449 noting that I've lenovo ideapads, no options to use discrete only so using the typical optimus, i.e. intel handles display, nvidia handles rendering, all via

Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-26 Thread Tim Richardson
HI Doug, it could be hardware dependent although my two Optimus laptops are very mainstream (both Quadro). It's more likely to be configuration (I hope) How do you achieve modeset=1? How do you confirm that you have Prime Sync working? I use xrandr --verbose | grep PRIME regards Tim On 27

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-26 Thread Doug McMahon
As far as hybrid (optimus) machines maybe this is hardware dependent? On all mine (660m, 775m, 940m) nvidia modeset=1 & Prime Synchronization work just fine, 16.04.3 thru 17.10. In 16.04.3 obviously using lightdm, in 17.10 using gdm3. -- You received this bug notification because you are a

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-16 Thread Tim Richardson
Sorry, that was premature. I had not enabled modeset=1 properly. After doing that a) in Optimus mode, only the laptop display works. The nvidia settings control panel opens, but it detects no screens. b) in discrete nvidia BIOS mode, gdm is stuck in a greeter loop when trying to start a Gmome or

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-15 Thread Tim Richardson
On the newer machine, the P50, I reinstalled 17.10 ubuntu yesterday, with pre-release packages enabled. It is using gdm3. It works, even with nvidia modeset=1 and external monitors. It is not obvious to me which updated packages have fixed this, since I also tried pre-release on the broken

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-11 Thread Tim Richardson
It is also broken on a ThinkPad W520, which is much older hardware (although still supported by current nvidia drivers). The Nvidia driver, gdm3, gnome (or gnome ubuntu) and modeset=1 is broken. Replace gdm3 with lightdm, and everything works. -- You received this bug notification because you

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-10 Thread Tim Richardson
And also note that modeset=1 is not designed to activate wayland. It is necessary to use the Prime Synchonization feature of the new nvidia drivers, which is actually a feature of X 1.19 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-08-10 Thread Tim Richardson
Update & simplication. This bug affects 17.10 & 17.04 with the current LTS support nvidia drivers. This bug affects both my laptops with nvidia hardware. External monitors are not necessary to reproduce. Reproduction is simple. 1. Activate the nvidia hardware using discrete mode. Therefore no

Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-30 Thread Tim Richardson
Thanks, I look forward to it. It works with lightdm, though. What is GDM doing that leads to a kernel panic, that lightdm does not do? On 31 July 2017 at 12:03, Daniel van Vugt wrote: > Oh, it appears your "p50 with a quadro M1000M" is relatively new. > > I read

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-30 Thread Daniel van Vugt
Oh, it appears your "p50 with a quadro M1000M" is relatively new. I read that Canonical has a kernel fix on the way that *might* help, but that discussion is hidden in private bug 1647617. So if and when that fix gets released I will give updates here. -- You received this bug notification

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-30 Thread Daniel van Vugt
** This bug is no longer a duplicate of bug 1705369 Ubuntu 17.10 boots to black screen when using Nvidia drivers (on a desktop with an Intel GPU) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu.

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-27 Thread Tim Richardson
*** This bug is a duplicate of bug 1705369 *** https://bugs.launchpad.net/bugs/1705369 ** This bug has been marked a duplicate of bug 1705369 Ubuntu 17.10 boots to black screen when using Nvidia drivers (on a desktop with an Intel GPU) -- You received this bug notification because you

Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-26 Thread Tim Richardson
That;s even worse. I don't any working screen, no login. This is not a trivial bug, I think, although I'd be happy for an easy solution. ul 26 17:26:38 raffles systemd[2817]: Starting Accessibility services bus... Jul 26 17:26:38 raffles dbus-daemon[2832]: Successfully activated service

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-25 Thread Daniel van Vugt
If everything works fine with lightdm then you can configure gdm to behave the same as lightdm. Just edit /etc/gdm3/custom.conf and uncomment: #WaylandEnable=false -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu.

Re: [Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-25 Thread Tim Richardson
The problem is that Optimus (Nvidia's hybrid driver technology) requires modeset=1 to use it properly so there are millions of laptop users who will have a problem with this :) https://devtalk.nvidia.com/default/topic/957814/linux/prime-and-prime-synchronization/ Plus it works fine with lightdm.

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-25 Thread Daniel van Vugt
I suggest you should just avoid Wayland if you want multi-GPU to work properly. That means using modeset=0. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-25 Thread Daniel van Vugt
I think it might be a general problem with Wayland (which is what gets used if you set modeset=1): https://bugs.freedesktop.org/show_bug.cgi?id=94851 So GDM/Wayland uses the first GPU only, which is your Intel GPU, the one wired to the laptop screen. ** Bug watch added: freedesktop.org Bugzilla

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-25 Thread Daniel van Vugt
** Also affects: nvidia-graphics-drivers-375 (Ubuntu) Importance: Undecided Status: New ** Tags added: black-screen gnome-17.10 multimonitor nvidia ** Tags removed: gnome-17.10 ** Tags added: zesty -- You received this bug notification because you are a member of Ubuntu Desktop Bugs,

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-25 Thread Tim Richardson
** Attachment added: "xrandr output" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+attachment/4921331/+files/xrandr.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu.

[Bug 1706474] Re: gdm3 nvidia modeset=1 is broken, external screens don't work

2017-07-25 Thread Tim Richardson
** Attachment added: "nvidia-bug-report" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+attachment/4921327/+files/nvidia-bug-report.log.gz -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu.