Here's a listing of my hardware:
$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 2
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 58
Model name: Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz
Stepping: 9
CPU MHz: 1596.441
CPU max MHz: 3300.0000
CPU min MHz: 1600.0000
BogoMIPS: 6585.26
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 3072K
NUMA node0 CPU(s): 0-3
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology
nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2
ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt tsc_deadline_timer xsave avx
f16c lahf_lm cpuid_fault epb pti ssbd ibrs ibpb stibp tpr_shadow vnmi
flexpriority ept vpid fsgsbase sme
$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v2/3rd Gen Core
processor DRAM Controller [8086:0150] (rev 09)
00:02.0 VGA compatible controller [0300]: Intel Corporation Xeon E3-1200 v2/3rd
Gen Core processor Graphics Controller [8086:0152] (rev 09)
00:16.0 Communication controller [0780]: Intel Corporation 6 Series/C200 Series
Chipset Family MEI Controller #1 [8086:1c3a] (rev 04)
00:1a.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset
Family USB Enhanced Host Controller #2 [8086:1c2d] (rev 04)
00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset
Family High Definition Audio Controller [8086:1c20] (rev 04)
00:1c.0 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset
Family PCI Express Root Port 1 [8086:1c10] (rev b4)
00:1c.5 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset
Family PCI Express Root Port 6 [8086:1c1a] (rev b4)
00:1d.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset
Family USB Enhanced Host Controller #1 [8086:1c26] (rev 04)
00:1f.0 ISA bridge [0601]: Intel Corporation H61 Express Chipset Family LPC
Controller [8086:1c5c] (rev 04)
00:1f.2 SATA controller [0106]: Intel Corporation 6 Series/C200 Series Chipset
Family SATA AHCI Controller [8086:1c02] (rev 04)
00:1f.3 SMBus [0c05]: Intel Corporation 6 Series/C200 Series Chipset Family
SMBus Controller [8086:1c22] (rev 04)
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06)
$ lspci -k
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor
DRAM Controller (rev 09)
Subsystem: Lenovo Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller
Kernel driver in use: ivb_uncore
Kernel modules: ie31200_edac
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen
Core processor Graphics Controller (rev 09)
Subsystem: Lenovo Xeon E3-1200 v2/3rd Gen Core processor Graphics
Controller
Kernel driver in use: i915
Kernel modules: i915
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series
Chipset Family MEI Controller #1 (rev 04)
Subsystem: Lenovo 6 Series/C200 Series Chipset Family MEI Controller
Kernel driver in use: mei_me
Kernel modules: mei_me
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family
USB Enhanced Host Controller #2 (rev 04)
Subsystem: Lenovo 6 Series/C200 Series Chipset Family USB Enhanced Host
Controller
Kernel driver in use: ehci-pci
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family
High Definition Audio Controller (rev 04)
Subsystem: Lenovo 6 Series/C200 Series Chipset Family High Definition
Audio Controller
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI
Express Root Port 1 (rev b4)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI
Express Root Port 6 (rev b4)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family
USB Enhanced Host Controller #1 (rev 04)
Subsystem: Lenovo 6 Series/C200 Series Chipset Family USB Enhanced Host
Controller
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset Family LPC Controller
(rev 04)
Subsystem: Lenovo H61 Express Chipset Family LPC Controller
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family
SATA AHCI Controller (rev 04)
Subsystem: Lenovo 6 Series/C200 Series Chipset Family 6 port Desktop
SATA AHCI Controller
Kernel driver in use: ahci
Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus
Controller (rev 04)
Subsystem: Lenovo 6 Series/C200 Series Chipset Family SMBus Controller
Kernel driver in use: i801_smbus
Kernel modules: i2c_i801
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411
PCI Express Gigabit Ethernet Controller (rev 06)
Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet
Controller
Kernel driver in use: r8169
Kernel modules: r8169
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1808626
Title:
Triple buffer flickering and weird display updating
Status in xserver-xorg-video-intel package in Ubuntu:
New
Bug description:
I've got a dual display setup, with one monitor rotated and I've been
running into some weird bugs. The screen will not update properly at
times and there will be areas that will intermittently flicker and
show old areas that should have been overdrawn.
Once it starts doing this, the only way to get things back to normal
is to reboot.
Going into standby and coming out of standby won't fix it. Actually,
sometimes coming out of standby the screen won't refresh properly and
I'll see the whole screen get some triple-buffer epilepsy inducing
flicker.
When I move the mouse from screen to screen and hover over the ubuntu
launcher dock so that it scrolls the icons it will flip the triple buffers and
the areas that have old data flickers.
I think the display is triple buffered and one of the buffers gets old
data. I can refresh the screen by dragging windows around manually
like an "eraser" where I'm using the window to "erase old data" but
this tends to get super annoying.
It seems to get brought out by rotating one of my displays. I have a
1920x1200 pivoting display that is rotated to the left. My other
display is 1920x1080 normal at position +1200+364.
I seem to hit this a lot because my monitor doesn't have a good EDID so it
comes up in ubuntu with an error message about crtcs (since it wants to do a
1920x1080 and it thinks the max is 1024x768) so after I set a new mode with:
$ xrandr --newmode "1920x1080R" 138.50 1920 1968 2000 2080 1080
1083 1088 1111 +hsync -vsync; xrandr --addmode VGA-1 "1920x1080R"
Once the new mode gets added Ubuntu will automatically restore my desktop to
its old settings pre-reboot and I start getting the flicker/update problems.
I would imagine that the bug should show itself up if you do a few
rotate/unrotate displays.
$ lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04
$ apt-cache policy xserver-xorg-video-intel
xserver-xorg-video-intel:
Installed: 2:2.99.917+git20171229-1
Candidate: 2:2.99.917+git20171229-1
Version table:
*** 2:2.99.917+git20171229-1 500
500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
100 /var/lib/dpkg/status
$ xrandr
Screen 0: minimum 320 x 200, current 3120 x 1920, maximum 8192 x 8192
VGA-1 connected primary 1920x1080+1200+364 (normal left inverted right x axis
y axis) 0mm x 0mm
1024x768 60.00
800x600 60.32 56.25
848x480 60.00
640x480 59.94
1920x1080R 59.93*
HDMI-1 connected 1200x1920+0+0 left (normal left inverted right x axis y
axis) 519mm x 324mm
1920x1200 59.95*+
1600x1200 60.00
1680x1050 59.88
1600x1000 60.01
1280x1024 85.02 75.02 60.02
1280x960 60.00
1152x864 75.00
1152x720 59.97
1024x768 75.03 60.00
832x624 74.55
800x600 75.00 60.32
640x480 75.00 59.94
720x400 70.08
DP-1 disconnected (normal left inverted right x axis y axis)
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