Created attachment 289165 [details] My Noisy Screen As linux kernel was updated to version 5 my laptop screen become noisy, I have same problem with all linux distros with kernel 5 and above. The problem is available both in graphic and text mode. windows works fine so my graphic card is OK. Ubunut 18.04.02: -------------------------------------------------------------------------------- Kernel Ver: 4.18.0-15-generic VGA Driver: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV620/M82 [Mobility Radeon HD 3450/3470] Subsystem: Sony Corporation RV620/M82 [Mobility Radeon HD 3450/3470] Kernel driver in use: radeon Kernel modules: radeon Screen Status: OK ________________________________________________________________________________ Ubuntu 18.04.03: -------------------------------------------------------------------------------- Kernel Ver: 5.0.0-23-generic VGA Driver: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV620/M82 [Mobility Radeon HD 3450/3470] Subsystem: Sony Corporation RV620/M82 [Mobility Radeon HD 3450/3470] Kernel driver in use: radeon Kernel modules: radeon Screen Status: Noisy
Does reverting: commit 33b3ad3788aba846fc8b9a065fe2685a0b64f713 Author: Christoph Hellwig <hch@lst.de> Date: Thu Aug 15 09:27:00 2019 +0200 drm/radeon: handle PCIe root ports with addressing limitations radeon uses a need_dma32 flag to indicate to the drm core that some allocations need to be done using GFP_DMA32, but it only checks the device addressing capabilities to make that decision. Unfortunately PCIe root ports that have limited addressing exist as well. Use the dma_addressing_limited instead to also take those into account. Reviewed-by: Christian König <christian.koenig@amd.com> Reported-by: Atish Patra <Atish.Patra@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Fix the issue?
I did this: https://www.reddit.com/r/linuxquestions/comments/gqrk3m/noisy_screen_in_linux_with_kernel_5/
(In reply to Alex Deucher from comment #1) > Does reverting: > > commit 33b3ad3788aba846fc8b9a065fe2685a0b64f713 > Author: Christoph Hellwig <hch@lst.de> > Date: Thu Aug 15 09:27:00 2019 +0200 > > drm/radeon: handle PCIe root ports with addressing limitations > > radeon uses a need_dma32 flag to indicate to the drm core that some > allocations need to be done using GFP_DMA32, but it only checks the > device addressing capabilities to make that decision. Unfortunately > PCIe root ports that have limited addressing exist as well. Use the > dma_addressing_limited instead to also take those into account. > > Reviewed-by: Christian König <christian.koenig@amd.com> > Reported-by: Atish Patra <Atish.Patra@wdc.com> > Signed-off-by: Christoph Hellwig <hch@lst.de> > Signed-off-by: Alex Deucher <alexander.deucher@amd.com> > > > Fix the issue? I did this and the issue still exists: https://www.reddit.com/r/linuxquestions/comments/gqrk3m/noisy_screen_in_linux_with_kernel_5/
Created attachment 290955 [details] revert Does this revert fix the issue?
Does it work correctly with 5.9-rc1 or newer?
Another thing to try, does setting radeon.agpmode=-1 fix the issue?
(In reply to Alex Deucher from comment #5) > Does it work correctly with 5.9-rc1 or newer? I tested with 5.10 and the problem still exists.
(In reply to Alex Deucher from comment #6) > Another thing to try, does setting radeon.agpmode=-1 fix the issue? I add it to grub but the issue still exists.
same problem. (i guess with "noisy" you mean "unreadable") i face the problem with mint and manjaro installer kali installation worked but the problem occurred after the first reboot
i forgot to mention that i have "AMD RV620/M82 [Mobility Radeon HD 3450/3470]" i tried same live usb with persistence on other pc (buitin intel somewhat) and all worked fine