And another video of just dragging the display settings window around:
https://www.youtube.com/watch?v=8Eo9hzA51X4
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https://bugs.launchpad.net/bugs/1808626
Title:
Triple buffer
Been fiddling with rotating and unrotating displays and when it starts
drawing improperly when rotated, I can unrotate the displays and the
improper drawing/flickering disappears.
Also the improper drawing disappears when I go to mirror mode.
I would imagine most people don't see this bug
I've been hesitant to try to reproduce this because my system runs so
well for a long time when this doesn't crop up.
So I rebooted without the video=VGA-1:e parameter and it starts doing
this sort of thing immediately.
I uploaded a video at youtube:
https://www.youtube.com/watch?v=2JOy_ilLAlw
I've been running the same setup and it runs absolutely perfectly if I
boot up with editing the Ubuntu command line in grub and add
video=VGA-1:e
BOOT_IMAGE=/boot/vmlinuz-4.15.0-43-generic root=UUID= ro
drm_kms_helper.edid_firmware=VGA-1:edid/hannsg.bin video=VGA-1:e
adding the
Public bug reported:
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
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:
I didn't think that Ubuntu's SimpleScreenRecorder would record the
corruption but it records it just fine:
Here's an HD video of the screen corruption:
https://www.youtube.com/watch?v=6dG_awbM5oo
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I decided to do a memory test by booting Ubuntu with the shift-key held
down and selecting memtest and surprisingly there's some bad memory
around the end of the 32GB (there's 4x8GB sticks installed). Booting
with the kernel parameter mem=24000M seems to get the system back to
stability.
I guess
Public bug reported:
A system that's been extremely good and stable has all of a sudden
become completely unusable after running Software Update.
After the last update, my system won't load firefox properly half of the
time. After loading pages like youtube it crashes the tab or just
crashes
I took the code out of the bigger program and made another small program
to show the bug:
=
#include
#include
#include
#include
#include
#include
template const char * mybitset(mytype myobj){
return std::bitset(myobj).to_string().c_str(); }
template
Public bug reported:
I am trying to print a bitset with printf using a template, but I keep getting
junk on the output.
I can print a bitset with
printf("%s",std::bitset<32>(valuetoprint).to_string().to_cstr());
but I thought it would be nice to do that with a template so I could
just go:
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