Confirmed that test kernel 5.14.0-1033lpv1967153-oem does not have the
bug. Even without intel_iommu=off.
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https://bugs.launchpad.net/bugs/1965882
Title:
[nouveau] External monitor plug
Can you upload it to a more familiar/trustworthy URL?
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https://bugs.launchpad.net/bugs/1965882
Title:
[nouveau] External monitor plugged into (secondary) Nvidia GPU is all
white (plus
could someone help to verify this kernel on target w/o intel_iommu=off?thanks
https://drive.google.com/drive/folders/1c1p8y265T9urgOwKoJLXaiGUrlKpJlKO?usp=sharing
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There's dmar error, i thought Device[01:00.0] may access a out-of-bound address.
[ 843.730480] DMAR: DRHD: handling fault status reg 3
[ 843.730488] DMAR: [DMA Read NO_PASID] Request device [01:00.0] fault addr
0x6e00 [fault reason 0x0c] non-zero reserved fields in PTE
[ 843.730494] DMAR: DRHD
** No longer affects: linux
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Title:
[nouveau] External monitor plugged into (secondary) Nvidia GPU is all
white (plus a little flicker)
To man
Yes! Fixed by intel_iommu=off
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
** Tags added: rls-jj-incoming
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should be easy to test with 'intel_iommu=off' on the kernel cmdline
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https://bugs.launchpad.net/bugs/1965882
Title:
[nouveau] External monitor plugged into (secondary) Nvidia GPU is all
We should check to see if this is the cause:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1971146/comments/29
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Title:
[nouveau] External
Another DRM regression in v5.14.21: bug 1971146
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Title:
[nouveau] External monitor plugged into (secondary) Nvidia GPU is all
white (plus a lit
The change that caused this bug is the newer kernel in Ubuntu 22.04. Not
anything we did directly to affect nouveau, we just seem to have
inherited a new nouveau bug. Older kernels do not have the bug.
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I think what you are saying is that nouveau is not maintained by Ubuntu.
I am just curious if Ubuntu made a config changed that caused this
issue, or if it was an update to nouveau itself. I personally like
nouveau because it allows automatic graphics switching, and the last
time I tried the native
For a variety of reasons, we don't recommend anyone use the default
nouveau driver. I only opened this bug for the sake of tracking. Please
open the 'Additional Drivers' app and install the proprietary Nvidia
driver instead.
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Just wanted to chime in and say I am having the same issue on my Lenovo
P1 which has both Intel and Nvidia cards. Ubuntu 21.10 worked
flawlessly, 22.04 displays a pure white screen on my external display.
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Maybe this was caused by an Ubuntu config change? Building 5.14.20 and
5.14.1 from git results in failure now. Only the mainline debs of those
versions succeed.
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** Summary changed:
- [nouveau] External monitor plugged into Nvidia GPU is all white (plus a
little flicker)
+ [nouveau] External monitor plugged into (secondary) Nvidia GPU is all white
(plus a little flicker)
** Description changed:
- External monitor plugged into Nvidia GPU is all white (p
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