Hello,
... good news! "lp1861554-2/" seems to work!
I got: linux-image-5.9.0-rc1+
giving:
- Linux version 5.9.0-rc1+ (khfeng@ubuntu)
- /lib/modules/5.9.0-rc1+/kernel/drivers/gpu/drm/radeon/radeon.ko
size: 2244937 date: Aug 17 11:19
- radeon driver still tells: 2.50.0 20080528 (see: dmesg)
Hello,
I've tested your kernel Linux version 5.8.0+ (khfeng@ubuntu) and
unfortunately the screen on my system flickers again!
You may watch some videos:
flicker_5.8.0.mpg via
https://drive.google.com/file/d/1mHsmJcgkMf7H26kQSFrhccTkdOju4APe/view?usp=sharing
flicker1_5.8.0.mpg
Hello,
I've tested the khfeng-kernel Linux version 5.8.0+ (khfeng@ubuntu) and
unfortunately the screen on my system flickers again!
You may watch some videos:
flicker_5.8.0.mpg via
https://drive.google.com/file/d/1mHsmJcgkMf7H26kQSFrhccTkdOju4APe/view?usp=sharing
flicker1_5.8.0.mpg
Hello!
A proposal:
make the fix for bug #1791312 depend on either the card-version or (more
flexible) a kernel-option for the radeon-driver.
As told, the fix works well for "AMD/ATI] RV530/M56-P controller"
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Packages,
I did the verification with 18.04 "Bionic" and it was o.k; see Comment# 72.
But I don't have a 16.04 "Xenial" installation, so I can't verify this version.
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** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic
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https://bugs.launchpad.net/bugs/1791312
Title:
ubuntu 18.04 flickering screen with
I've tested the kernel from
http://at.archive.ubuntu.com/ubuntu bionic-proposed/main amd64 Packages
linux-headers-4.15.0-55-generic Linux kernel headers for version 4.15.0 on
64 bit x86 SMP
linux-image-4.15.0-55-generic Signed kernel image generic
linux-modules-4.15.0-55-generic Linux
instead of "In Progress" I better set the Status to "Confirmed"
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Confirmed
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Fix in Bionic does NOT work; see comment #65
** Changed in: linux (Ubuntu Bionic)
Status: Fix Committed => In Progress
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https://bugs.launchpad.net/bugs/1791312
today I've updated the kernel to the current version 4.15.0-54 and ... the
screen flickers again (!!!)
while the version from https://launchpad.net/~kaihengfeng is working
perfectly!!!
The differences:
current kernel 4.15.0-54: radeon.ko version: 2.50.0; module-size: 2342342
kaihengfeng kernel
I've tested the kernel 4.15.0-52 (from khfeng) on my laptop and found: THE
FLICKERING IS GONE!
Screen is O.K. in text and graphic - mode. Console switching works too.
So, Paul's bugfix seems to work! Many thanks!
I found one small thing:
the new radeon.ko - module identifies itself still as
"...
.. as recommended I tried 3.14.79-031479-generic;
giving me radeon.ko version 2.37.0 and the screen is o.k. No flickering.
btw. I had the same result e.g. with "puppy_tahr 6.0.5 boot CD" which has the
same radeon-version (2.37.0).
My guess: the flickering-problem starts with radeon 2.39.0
I tried the glamor / tearfree - advice, but: with NO success; still flickering.
And, btw.: I don't think the flickering is an Xorg-issue;
it starts in "textmode" (!!) as soon as the radeon-kernel-driver loads. I think
the kernel-driver
does NOT read Xorg-configurations.
Just for fun, I've
Sorry, but it turned out that the flickering-issue is NOT really fixed with the
upstream-kernel.
Sometimes a boot again ends in a flickering screen as before.
Now I have the following scenario:
- boot 14.04.5 LTS with kernel 3.13.0-157
-> screen is ALWAYS o.k.; NO flickering
- boot 18.04.1 LTS
** Tags removed: kernel-fixed-upstream
** Tags added: kernel-bug-exists-upstream
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https://bugs.launchpad.net/bugs/1791312
Title:
ubuntu 18.04 flickering screen with Radeon
I tested the flickering-issue with the upstream-kernel
"linux-image-unsigned-4.19.0-041900rc3-generic_4.19.0-041900rc3.201809120832_amd64.deb"
and it seemed to be fixed!
No more flickering.
So I added the tag "kernel-fixed-upstream" to this report.
** Tags added: kernel-fixed-upstream
**
I attached a short video-clip (MOV03422.MPG) showing the flickering
screen; that flickering continues in grafic-mode too ...
** Attachment added: "MOV03422.MPG"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/+attachment/5186833/+files/MOV03422.MPG
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you can find the missing logfile as attachment:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/+attachment/5186052/+files/apport.linux-image-4.15.0-33-generic.s5j_wb2y.apport
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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You received this bug
Public bug reported:
my laptop: HP Compaq nx9420
my grafic card:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
RV530/M56-P [Mobility Radeon X1600] (prog-if 00 [VGA controller])
attachment:
the bug-apport-file
Description:
I start ubuntu 18.04 LTS (Kernel 4.15.0.33)
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