[Intel N95] Horizontal line artifact/ghosting when scaling windows to a certain width

[Abram Wiebe]

When scaling some windows in some programs down horizontal lines appear that seem to be part of the texture memory somewhere else on the screen.

This only occurs in some programs like nautilus and gedit, but not in others like terminal or Firefox.

It did however occur when I opened the dialog in firefox to attach the screen capture.

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.5.0-26.26-generic 6.5.13
Uname: Linux 6.5.0-26-generic x86_64
ApportVersion: 2.27.0-0ubuntu5
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: unknown
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 5 03:44:15 2024
DistUpgraded: 2024-04-04 22:25:39,405 DEBUG icon theme changed, re-reading
DistroCodename: mantic
DistroVariant: ubuntu
DkmsStatus:
 nvidia/470.239.06, 5.15.0-101-generic, x86_64: installed
 nvidia/470.239.06, 6.5.0-26-generic, x86_64: installed
GraphicsCard:
 Intel Corporation Alder Lake-N [UHD Graphics] [8086:46d2] (prog-if 00 [VGA controller])
   Subsystem: Intel Corporation Alder Lake-N [UHD Graphics] [8086:7270]
InstallationDate: Installed on 2022-12-15 (477 days ago)
InstallationMedia: Ubuntu 18.04.6 LTS "Bionic Beaver" - Release amd64 (20210915)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 8087:0a2a Intel Corp. Bluetooth wireless interface
 Bus 001 Device 003: ID 0461:4e8d Primax Electronics, Ltd HP USB Optical Mouse
 Bus 001 Device 002: ID 04f3:0103 Elan Microelectronics Corp. ActiveJet K-2024 Multimedia Keyboard
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: {report['dmi.sys.vendor']} {report['dmi.product.name']}
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-26-generic root=UUID=7e20054f-50f7-4011-8c9c-516960719274 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to mantic on 2024-04-05 (0 days ago)
dmi.bios.date: 02/06/2023
dmi.bios.release: 5.26
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: ADLNV104
dmi.board.asset.tag: Default string
dmi.board.name: MINI S
dmi.board.vendor: AZW
dmi.board.version: 10
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrADLNV104:bd02/06/2023:br5.26:svnAZW:pnMINIS:pvrDefaultstring:rvnAZW:rnMINIS:rvr10:cvnDefaultstring:ct3:cvrDefaultstring:sku01:
dmi.product.family: Default string
dmi.product.name: MINI S
dmi.product.sku: 01
dmi.product.version: Default string
dmi.sys.vendor: AZW
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.115-1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.2.1-1ubuntu3.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.7-3ubuntu2.8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1

[Abram Wiebe (ethanpet113)]

The artifact moves when the window moves, which suggests that something is either wrong with the library drawing on the surface (supported by only some programs being affected), or the compositor.

[Abram Wiebe (ethanpet113)]

Problem did not occur on prior Ubuntu 20.04. I upgraded because the intel graphics acceleration for Intel N95 chipset was not supported. Thus the system used software rendering.

[Abram Wiebe (ethanpet113)]

Some similar issues involve a stripe of corrupted graphics memory along the entire width of the framebuffer. THIS IS NOT THAT ISSUE. It's more like a bunch of 1px lines are spilling an image from somewhere else on the screen. In particular one of the screenshots shows the taskbar spilling on top of the desktop background by way of a nautilus window.

[Abram Wiebe (ethanpet113)]

Seems to not happen with items built with Qt. but is definitely happening with gedit, and system, nautilus,calclator and modal file window. It does not appear to be transient because I can open and close calculator and it will still happen. I don't know if that means it's a problem with gtk, or gnome. But from my loose understanding of Linux GUI development it seems to be restricted to apps likely built with the same widget toolkit.