[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
Adding GRUB_GFXMODE=1920x1080 to /etc/default/grub, running update-grub, and rebooting fixed this for me. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24": On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14": On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
I have the same problem after the last updates, my external monitor blinking randomly! monitor is https://www.asus.com/Displays- Desktops/Monitors/Eye-Care/VC239H/ $ hostnamectl Icon name: computer-laptop Chassis: laptop Operating System: Fedora Linux 35 (Workstation Edition) CPE OS Name: cpe:/o:fedoraproject:fedora:35 Kernel: Linux 5.15.11-200.fc35.x86_64 Architecture: x86-64 Hardware Vendor: ASUSTeK COMPUTER INC. Hardware Model: N56VJ $ sudo lshw -C display *-display description: VGA compatible controller product: GF108M [GeForce GT 635M] vendor: NVIDIA Corporation physical id: 0 bus info: pci@:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:29 memory:f600-f6ff memory:e000-efff memory:f000-f1ff ioport:e000(size=128) memory:f700-f707 *-display description: VGA compatible controller product: 3rd Gen Core processor Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list configuration: driver=i915 latency=0 resources: irq:27 memory:f740-f77f memory:d000-dfff ioport:f000(size=64) memory:c-d $ rpm -qa |grep xorg-x11-server xorg-x11-server-common-1.20.14-1.fc35.x86_64 xorg-x11-server-Xorg-1.20.14-1.fc35.x86_64 xorg-x11-server-Xephyr-1.20.14-1.fc35.x86_64 xorg-x11-server-Xwayland-21.1.4-1.fc35.x86_64 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24": On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14": On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
Oh, thanks for all of you reported this issue. I'm using Ubuntu20.04.2 now, and encountered the exactly same issue as you met about 12 years ago on Ubuntu9.04. It seems this is a very old bug in Ubuntu or linux bug on its HDMI driver. And because not so many people using external HDMI monitor, so this issue couldn't be paid attention to for linux/Ubuntu engineering team. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24": On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14": On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
could not attach lspci in the previous comment. attaching now. ** Attachment added: "lspci" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+attachment/4819198/+files/lspci%20-vvnn -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24": On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14": On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
I have a similar issue with my Dell Latitude 7250. I have Ubuntu Gnome 16.04, 64 bit installed on the laptop and connected to a dock. I have 3 Dell 22" monitors connected. One of the monitor is using a VGA connector, and two are using DVI connectors on the monitor. The issue is - when I start my day the set up works nicely. But when the screens go in the sleep mode and the laptop also goes in suspend, getting the screens working properly is a pain. One of the screens keep flickering. The fix that I have to apply is go to display settings, disable the monitor that is flickering and then re-enable the monitor. The monitor then stops flickering and works well. But then I have to re- arrange the monitor display. Attaching dmesg and lspci-vvnn outputs. Regards Kedar ** Attachment added: "dmesg" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+attachment/4819197/+files/dmesg -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24": On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14": On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
The screen blanks after BIOS, flickers a few times, and then plymouth dies, leaving the system in an inconsistent state. You may or may not see the Plymouth boot splash graphics. Problem: Black screen after resume:- Typical scenario is "use a laptop docked with lid closed, only the external screen is active, suspend, take the laptop, open it somewhere"... which leads to "no screen active". To debug this problem, check if gnome-settings-daemons is getting a signal that the display configuration has changed, by running xtrace against it, and look for a RRScreenChangeNotify event when resuming the machine. If that signal is being sent, then it indicates a possible bug in g-s-d. Otherwise, it suggests a bug in either X or (more likely) the kernel which is not causing the signal to be emitted to begin with. Problem: Lockup When Closing Lid with Intel Graphics There is a long known issue with the -intel driver where pipe A/B mixups can cause hangs at the point where the lid is closed. The good news is that it is easily quirkable. In general this is most often seen with newer hardware, because older hardware either has already gotten a quirk or doesn't need one. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24": On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14": On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
I am using Ubuntu 16.04LTS and had a similar behavior. I have External Dell monitor and whenever I was visiting sites that has flash, or moving the windows my monitor was flickering like crazy. Setting the refresh rate to 60Hz made everything fine. xrandr -s 1920x1080 -r 60.00 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24": On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14": On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
I have a very similar behaviour on my i7 PC with two Benq monitors: 23" vga and 24" dvi. Dvi one can blink several times in a row or not to blink for some long time. Haven't found any consistent pattern about it. I am running Ubuntu Gnome 15.10 that I have upgraded to 16.04 recently. Problem was from very beginning and continues after upgrade. ** Attachment added: "diag.zip" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+attachment/4664401/+files/diag.zip -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By "blinking" I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24": On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14": On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 349943] Re: Screen blinks randomly on external monitor
FWIW, my problem was just that one of my wires was loose. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/349943 Title: Screen blinks randomly on external monitor Status in xorg package in Ubuntu: Won't Fix Bug description: Hardware: Asus F8Va laptop (Core 2 Duo P8600, ATI HD3650, 1440x900) OS: Ubuntu 9.04 beta x64 (Wubi installation inside Windows Vista Home Premium x64 SP1) External monitor (Samsung SyncMaster 2493HM, 1920x1200), connected via HDMI, blinks several times a minute, randomly. When there is no user activity, it doesn't seem to blink however. By blinking I mean, the monitor goes off and then on, like it usually does when it changes resolution, only resolution doesn't change. Also, when I move windows around, thin horizontal stripes flash in fraction of second from time to time (only on external monitor). Screen configuration: Samsung 24: On Resolution: 1920x1200 Refresh rate: 60 Hz Rotation: Normal Laptop 14: On Resolution: 1440x900 Refresh rate: 67 Hz Rotation: Normal Mirror screens: unchecked Relative position of screens (physical and in Display Preferences) laptop screen below the external screen, centred. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/349943/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
