The laptop monitor stays on a consistent basis in-between all the monitors. Two independent variables exist, one dependent variable exists. Independent variable #1: Plugging in and out the docking station. Independent variable #2: Powering on and off the computer. Independent variable #3: Connecting and disconnecting the power supply. Independent variables 1, 2, and 3 all represent possible/potential cause-and-effect relationships here. But the one dependent variable is the fractional scaling consistently, over time, reverting back to 100% fractional scaling. Notes A.: I have anywhere from 1 to 4 monitors total connected to my laptop's intel processor at any given moment in time. With the default max being 3, Display Link allows for unlimited more.
Investigative tips: 1a. When unplugging my docking station from the laptop (through a usb A standard), it can be seen that main monitor (i.e., the laptop's monitor) stays at 125% fractional scaling. 1b. When reconnecting docking station to the laptop, main laptop integrated monitor (central to my multi-monitor setup) remains at 125%. 2a. Most of the issues stem from restarting the OS I believe. Will have to wait and see. 2b. Doing a full restart and then plugging in all the monitors again brings up zero problems. Doing a full restart with all monitors plugged in, while unplugging the docking station in order to allow for the OS to load, results in zero problems too. I guess the problems with the fractional scaling sticking went away. 2c. After re-trying to simulate the problem a third time through rebooting, I failed to replicate the problem. Suggesting that the problem has been fixed somehow once-and-forall. One theory is that it was solved on the Ubuntu or other software development team. Another theory is that after manually re-setting the fractional scaling each time one of my three external monitors was plugged in and pulled out (in different orders too), the system became more resilient to switching back to 100% fractional scaling over time. 2d. Full debugging of investigative step #2c results in the following effects: zero errors. This conclusive evidence suggests the problem is no more, at least as far as this installation of Ubuntu goes (noting that there have been no adjustments to Ubuntu made (except for the installation of DisplayLink). On Wed, Jul 16, 2025 at 8:39 AM Grant Vollrath <[email protected]> wrote: > No, I'll have to give you updates when the next error occurs. > > > On Tue, Jul 15, 2025 at 8:25 PM Daniel van Vugt < > [email protected]> wrote: > >> Does the bug perhaps occur whenever the laptop monitor is not at the >> top-left of all monitors? >> >> -- >> You received this bug notification because you are subscribed to the bug >> report. >> https://bugs.launchpad.net/bugs/2116953 >> >> Title: >> External monitors reset fractional scaling >> >> Status in mutter package in Ubuntu: >> New >> >> Bug description: >> Whenever external monitors are plugged in and unplugged, my laptop LCD >> display always defaults to 100% fractional scaling, and that specific >> monitor needs to be at 125%, not 100%, otherwise the text is too small for >> me to read. And this makes using the Ubuntu operating system largely >> inconvenient for me when in comparison to Windows. >> If re-creating the problem on your end doesn't work, just know I have >> DisplayLink by Synaptics installed, a USB hub managing software. >> >> Ubuntu 24.04.2 LTS >> All software packages up to date as of July 15th, 2025. >> >> ProblemType: Bug >> DistroRelease: Ubuntu 24.04 >> Package: xorg 1:7.7+23ubuntu3 >> ProcVersionSignature: Ubuntu 6.11.0-29.29~24.04.1-generic 6.11.11 >> Uname: Linux 6.11.0-29-generic x86_64 >> ApportVersion: 2.28.1-0ubuntu3.8 >> Architecture: amd64 >> BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' >> CasperMD5CheckResult: pass >> CompositorRunning: None >> CurrentDesktop: ubuntu:GNOME >> Date: Tue Jul 15 09:40:53 2025 >> DistUpgraded: Fresh install >> DistroCodename: noble >> DistroVariant: ubuntu >> DkmsStatus: >> evdi/1.14.10, 6.11.0-28-generic, x86_64: installed >> evdi/1.14.10, 6.11.0-29-generic, x86_64: installed >> virtualbox/7.0.16, 6.11.0-28-generic, x86_64: installed >> virtualbox/7.0.16, 6.11.0-29-generic, x86_64: installed >> ExtraDebuggingInterest: Yes >> GraphicsCard: >> Intel Corporation Iris Plus Graphics G1 (Ice Lake) [8086:8a56] (rev >> 07) (prog-if 00 [VGA controller]) >> Subsystem: Lenovo Iris Plus Graphics G1 (Ice Lake) [17aa:3852] >> InstallationDate: Installed on 2025-05-23 (53 days ago) >> InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 >> (20250215) >> MachineType: LENOVO 20SM >> ProcEnviron: >> LANG=en_US.UTF-8 >> PATH=(custom, no username) >> SHELL=/bin/bash >> XDG_RUNTIME_DIR=<set> >> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.11.0-29-generic >> root=UUID=13909993-06dd-41a1-9ffb-6425aca1ec08 ro quiet splash vt.handoff=7 >> RebootRequiredPkgs: Error: path contained symlinks. >> SourcePackage: xorg >> Symptom: display >> UpgradeStatus: No upgrade log present (probably fresh install) >> dmi.bios.date: 12/08/2022 >> dmi.bios.release: 1.30 >> dmi.bios.vendor: LENOVO >> dmi.bios.version: DJCN30WW >> dmi.board.name: LNVNB161216 >> dmi.board.vendor: LENOVO >> dmi.board.version: SDK0J40697 WIN >> dmi.chassis.type: 10 >> dmi.chassis.vendor: LENOVO >> dmi.chassis.version: Lenovo ThinkBook 15-IIL >> dmi.ec.firmware.release: 1.20 >> dmi.modalias: >> dmi:bvnLENOVO:bvrDJCN30WW:bd12/08/2022:br1.30:efr1.20:svnLENOVO:pn20SM:pvrLenovoThinkBook15-IIL:rvnLENOVO:rnLNVNB161216:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrLenovoThinkBook15-IIL:skuLENOVO_MT_20SM_BU_idea_FM_Thinkbook15-IIL: >> dmi.product.family: Thinkbook 15-IIL >> dmi.product.name: 20SM >> dmi.product.sku: LENOVO_MT_20SM_BU_idea_FM_Thinkbook 15-IIL >> dmi.product.version: Lenovo ThinkBook 15-IIL >> dmi.sys.vendor: LENOVO >> version.compiz: compiz N/A >> version.libdrm2: libdrm2 2.4.124+git2501180500.a7eb2c~oibaf~n >> version.libgl1-mesa-dri: libgl1-mesa-dri >> 25.0~git2505290929.35721f~oibaf~n >> version.libgl1-mesa-glx: libgl1-mesa-glx N/A >> version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1.4 >> version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A >> version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1 >> version.xserver-xorg-video-intel: xserver-xorg-video-intel >> 2:2.99.917+git20210115-1build1 >> version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau >> 1:1.0.17-2build1 >> >> To manage notifications about this bug go to: >> >> https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2116953/+subscriptions >> >> -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2116953 Title: External monitors reset fractional scaling Status in mutter package in Ubuntu: New Bug description: Whenever external monitors are plugged in and unplugged, my laptop LCD display always defaults to 100% fractional scaling, and that specific monitor needs to be at 125%, not 100%, otherwise the text is too small for me to read. And this makes using the Ubuntu operating system largely inconvenient for me when in comparison to Windows. If re-creating the problem on your end doesn't work, just know I have DisplayLink by Synaptics installed, a USB hub managing software. Ubuntu 24.04.2 LTS All software packages up to date as of July 15th, 2025. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: xorg 1:7.7+23ubuntu3 ProcVersionSignature: Ubuntu 6.11.0-29.29~24.04.1-generic 6.11.11 Uname: Linux 6.11.0-29-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.8 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: pass CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Tue Jul 15 09:40:53 2025 DistUpgraded: Fresh install DistroCodename: noble DistroVariant: ubuntu DkmsStatus: evdi/1.14.10, 6.11.0-28-generic, x86_64: installed evdi/1.14.10, 6.11.0-29-generic, x86_64: installed virtualbox/7.0.16, 6.11.0-28-generic, x86_64: installed virtualbox/7.0.16, 6.11.0-29-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Iris Plus Graphics G1 (Ice Lake) [8086:8a56] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo Iris Plus Graphics G1 (Ice Lake) [17aa:3852] InstallationDate: Installed on 2025-05-23 (53 days ago) InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215) MachineType: LENOVO 20SM ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no username) SHELL=/bin/bash XDG_RUNTIME_DIR=<set> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.11.0-29-generic root=UUID=13909993-06dd-41a1-9ffb-6425aca1ec08 ro quiet splash vt.handoff=7 RebootRequiredPkgs: Error: path contained symlinks. SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/08/2022 dmi.bios.release: 1.30 dmi.bios.vendor: LENOVO dmi.bios.version: DJCN30WW dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo ThinkBook 15-IIL dmi.ec.firmware.release: 1.20 dmi.modalias: dmi:bvnLENOVO:bvrDJCN30WW:bd12/08/2022:br1.30:efr1.20:svnLENOVO:pn20SM:pvrLenovoThinkBook15-IIL:rvnLENOVO:rnLNVNB161216:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrLenovoThinkBook15-IIL:skuLENOVO_MT_20SM_BU_idea_FM_Thinkbook15-IIL: dmi.product.family: Thinkbook 15-IIL dmi.product.name: 20SM dmi.product.sku: LENOVO_MT_20SM_BU_idea_FM_Thinkbook 15-IIL dmi.product.version: Lenovo ThinkBook 15-IIL dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.124+git2501180500.a7eb2c~oibaf~n version.libgl1-mesa-dri: libgl1-mesa-dri 25.0~git2505290929.35721f~oibaf~n version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1.4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1build1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2116953/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
