[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-06-26 Thread Kai-Heng Feng
** Description changed:

+ === SRU Justification ===
+ [Impact]
+ Screen flickers when using radeon.ko.
+ It's a regression, it didn't happen on Trusty.
+ 
+ [Fix]
+ Quote the original commit log:
+ "Instead of the closest reference divider prefer the lowest".
+ 
+ [Test]
+ Affected user confirms it fixes the issue.
+ 
+ [Regression Potential]
+ Low. Only affect radeaon, and it's in upstream stable tree.
+ 
+ === Original Bug Report ===
  my laptop: HP Compaq nx9420
- my grafic card: 
+ 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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.
  
  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around
  
  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
- the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
+ the screen is o.k. NO flickering in textmode, nice grafic, NO flickering
  xrandr tells: 1680x1050 60.1
  
  so I must stay on old ubuntu 14.04.05 ???

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  === SRU Justification ===
  [Impact]
  Screen flickers when using radeon.ko.
  It's a regression, it didn't happen on Trusty.

  [Fix]
  Quote the original commit log:
  "Instead of the closest reference divider prefer the lowest".

  [Test]
  Affected user confirms it fixes the issue.

  [Regression Potential]
  Low. Only affect radeaon, and it's in upstream stable tree.

  === Original Bug Report ===
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-06-16 Thread Werner Lueckel
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
"... Initialized radeon 2.50.0 20080528";
same like the buggy version. 
So it is difficult to distinguish the "good" from the "buggy" - module.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-06-13 Thread Kai-Heng Feng
Please test kernel here:
https://people.canonical.com/~khfeng/lp1791312/

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-06-12 Thread Bug Watch Updater
** Changed in: linux
   Status: Confirmed => Fix Released

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-06-12 Thread Paul Dufresne
The patch is included in:
Linux 4.14.125
Linux 4.19.50
Linux 5.1.9
I don't have access to the laptop on which I investigated this problem anymore.

But it could be tested from the built kernel packages at:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14.125/
https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19.50/
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.1.9/
Install linux-headers then linux-modules then linux-image (I think)

In fact, testing on other ATI hardware too see not bad results happen
would be... reassuring.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-05-16 Thread Bug Watch Updater
Launchpad has imported 36 comments from the remote bug at
https://bugs.freedesktop.org/show_bug.cgi?id=108514.

If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
https://help.launchpad.net/InterBugTracking.


On 2018-10-22T16:07:16+00:00 Werner-lueckel-m wrote:

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])
screen resolution: 1680x1050@60.1

when booting UBUNTU "14.04.5 LTS, Trusty Tahr" kernel 3.13.0-160-generic
-> the screen is fine in text-mode and in grafic-mode; NO flickering.
boot-messages say:
[drm] Initialized radeon 2.36.0 ...

BUT,
when booting UBUNTU "18.04.1 LTS (Bionic Beaver)" kernel 4.15.0-36-generic
-> the screen starts heavy flickering as soon as the kernel-module "radeon.ko"
is loaded. The flickering continues in grafic-mode.
here the boot-messages say:
[drm] Initialized radeon 2.50.0 ...
so: this seems to be a new version of radeon.ko.

My question:
- is there a method or a 'hidden flag' to switch radeon.ko-2.50 back to the
  good behaviour of radeon.ko-2.16?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/comments/8


On 2018-10-22T18:14:39+00:00 Alexdeucher wrote:

Any chance you can narrow down when the regression occurred and bisect
it using git?  Please attach your dmesg output and xorg log (if using
X).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/comments/9


On 2018-10-23T16:31:25+00:00 Werner-lueckel-m wrote:

Created attachment 142154
dmesg Ubuntu14.04, Kernel3.13.0-160, radeon 2.36.0, screen O.K.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/comments/10


On 2018-10-23T16:34:59+00:00 Werner-lueckel-m wrote:

Created attachment 142155
dmesg Ubuntu18.04, Kernel4.15.0-36, radeon 2.50.0, screen flickering

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/comments/11


On 2018-10-23T16:45:12+00:00 Werner-lueckel-m wrote:

- I attached 2 dmesg-listings;
  booting Ubuntu14.04, Kernel3.13 -> screen is o.k.; no flickering
  booting Ubuntu18.04, Kernel4.15 -> screen flickers.
- no Xorg log since the flickering happens already in text-mode
- I did the following test (on Ubuntu18.04):
  . boot with radeon.modeset=0 (thus: disable radeon driver)
-> screen o.k.; NO flickering
  . then sudo modprobe -v radeon modeset=1
-> and the flickering starts ...

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/comments/12


On 2018-10-23T17:07:33+00:00 Werner-lueckel-m wrote:

Created attachment 142156
dmesg Ubuntu14.04, Kernel4.4.0-133, radeon 2.43.0, screen flickering

... and I found out that the screen-flickering already starts with
VERSION="14.04.5 LTS, Trusty Tahr"
kernel: 4.4.0-133-generic
radeon 2.43.0

see the attached dmesg14.04_4.4.0-133.txt

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/comments/13


On 2018-10-24T13:29:58+00:00 Werner-lueckel-m wrote:

Additional Information:

- I have the same flickering screen with

  Debian Life CD: UBCD-life
Linux version 3.16.0-4-586
[drm] Initialized radeon 2.39.0 20080528

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/comments/14


On 2018-10-30T15:54:54+00:00 Werner-lueckel-m wrote:

some more tests with different systems give the following table:

sorted by radeon-version
systemkernelradeon  result
- ---   
UBUNTU 14.04.5 LTS, Trusty Tahr   3.13.0-1612.36.0  O.K.
puppy_tahr 6.0.5  3.14.56   2.37.0  O.K.
puppy_slacko 6.3.23.14.55   2.37.0  O.K
UBCD  3.16.02.39.0  FLICKER
puppy_xenialpup 7.5   4.4.952.43.0  FLICKER
UBUNTU 14.04.5 LTS, Trusty Tahr   4.4.0-133 2.43.0  FLICKER
UBUNTU 18.04.1 LTS (Bionic Beaver)4.15.0-36 2.50.0  FLICKER

so the problem seems to start with a radeon.ko driver > 2.37.0;
I wonder how the radeon-version 2.38.0 would work, but, so far, I havn't 
found a system including it.


[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-05-10 Thread Timo Jyrinki
Being fixed in upstream
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-
next-5.2=2e26ccb119bde03584be53406bbd22e711b0d6e6

Maybe a candidate for SRUs too after the fix hits eoan (19.10).

** Also affects: linux via
   https://bugs.freedesktop.org/show_bug.cgi?id=108514
   Importance: Unknown
   Status: Unknown

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in Linux:
  Unknown
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-22 Thread Kai-Heng Feng
Paul,

Since you already bisected the commit, please file an upstream bug at 
https://bugs.freedesktop.org/
Product: DRI
Component: DRM/Radeon

So the radeon maintainers can work on a fix.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-19 Thread Ubuntu Foundations Team Bug Bot
** Tags added: patch

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-19 Thread Paul Dufresne
** Patch added: "patch radeon-display.c for latest kernel (5.0.0rc7)"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/+attachment/5240017/+files/radeon-display.patch

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-12 Thread Antonio Ferraro
Same problem here: Laptop is a HP 255 G6 based on AMD E2-9000e, Ubuntu
is 18.04 64 bits, kernel 4.15.0-45-generic, wide monitor is LG LG
25UM58-P, 2560x1080.

It does not always flicker, but it does when playing video or when using
applications in full screen mode (or in general when using most of the
surface of the wide screen). Monitor is connected through HDMI, other
monitors with lower resolutions do not flicker.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-09 Thread fv
Same laptop, same problem.
Thanks for workaround using commands: xrandr ..; sleep 2; xrandr ...;

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-05 Thread Paul Dufresne
Well, It seems to take more than 12 hours ( I did stopped it ) to compile a
kernel (many features deactivated) on my atom based laptop. Will retry.

But the line I wanted to comment out does not seems to exist anymore.

But I found that the function to select PLL values show them before returning
in a DRM_DEBUG_KMS macro. I also found that if booted with kernel parameter
drm.debug=4 then KernelModeSettings related messages are added to dmesg output.

So I expect to be able to compare tomorrow PLL values for the old version where
the bug does not manifest to a new one where the bug manifest itself.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-04 Thread Paul Dufresne
Indeed, the two radeon parameters for PLL mention in previous message
does not seems to appear anymore in modinfo radeon.

paul@paul-NC210-NC110:~/linux-stable$ git log --oneline v3.15-rc1..v3.15-rc2 | 
grep radeon
bcddee29b0b8 drm/radeon/ci: make sure mc ucode is loaded before checking the 
size
8c79bae6a30f drm/radeon/si: make sure mc ucode is loaded before checking the 
size
f8a2645ecede drm/radeon: improve PLL params if we don't match exactly v2
74073c9dd299 drm/radeon: memory leak on bo reservation failure. v2
681941c1790b drm/radeon: fix VCE fence command
7e1858f9aff7 drm/radeon: re-enable mclk dpm on R7 260X asics
277babc374f6 drm/radeon: add support for newer mc ucode on CI (v2)
1ebe92802eaf drm/radeon: add support for newer mc ucode on SI (v2)
5fb9cc4d8b16 drm/radeon: apply more strict limits for PLL params v2
6abc6d5c73b2 drm/radeon: update CI DPM powertune settings
90c4cde9d5a2 drm/radeon: fix runpm handling on APUs (v4)
57700ad1f2f2 drm/radeon: disable mclk dpm on R7 260X
8902e6f2b832 drm/radeon: Improve vramlimit module param documentation
be0949f5eb9c drm/radeon: fix audio pin counts for DCE6+ (v2)
379dfc25e257 drm/radeon/dp: switch to the common i2c over aux code
25377b921b40 drm/radeon/dp: handle zero sized i2c over aux transactions (v2)
paul@paul-NC210-NC110:~/linux-stable$ 

paul@paul-NC210-NC110:~/linux-stable$ git show 5fb9cc4d8b16
commit 5fb9cc4d8b1639b9a7487c1ee7b2b0c52877327d
Author: Christian König 
Date:   Fri Apr 4 13:45:42 2014 +0200

drm/radeon: apply more strict limits for PLL params v2

Letting post and refernce divider get to big is bad for signal stability.

v2: increase the limit to 210

Signed-off-by: Christian König 

diff --git a/drivers/gpu/drm/radeon/radeon_display.c 
b/drivers/gpu/drm/radeon/radeon_display.c
index 386cfa4c194d..2f42912031ac 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -937,6 +937,9 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll,
}
post_div = post_div_best;
 
+   /* limit reference * post divider to a maximum */
+   ref_div_max = min(210 / post_div, ref_div_max);
+
/* get matching reference and feedback divider */
ref_div = max(den / post_div, 1u);
fb_div = nom;
paul@paul-NC210-NC110:~/linux-stable$ 
I might try to recompile kernel with that line commented out.
But it has been many years I did not compile a kernel.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-04 Thread Paul Dufresne
From: https://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc2-trusty/CHANGES
I see the folowing changes for radeon:

Alex Deucher (13):
  drm/radeon/dp: handle zero sized i2c over aux transactions (v2)
  drm/dp/i2c: send bare addresses to properly reset i2c connections (v4)
  drm/dp/i2c: Update comments about common i2c over dp assumptions (v3)
  drm/radeon/dp: switch to the common i2c over aux code
  drm/radeon: fix audio pin counts for DCE6+ (v2)
  drm/radeon: disable mclk dpm on R7 260X
  drm/radeon: fix runpm handling on APUs (v4)
  drm/radeon: update CI DPM powertune settings
  drm/radeon: add support for newer mc ucode on SI (v2)
  drm/radeon: add support for newer mc ucode on CI (v2)
  drm/radeon: re-enable mclk dpm on R7 260X asics
  drm/radeon/si: make sure mc ucode is loaded before checking the size
  drm/radeon/ci: make sure mc ucode is loaded before checking the size

Christian König (2):
  drm/radeon: apply more strict limits for PLL params v2
  drm/radeon: improve PLL params if we don't match exactly v2

Christoph Jaeger (2):
  ...
  drm/radeon: fix VCE fence command

Quentin Casasnovas (1):
  drm/radeon: memory leak on bo reservation failure. v2

The:
Christian König (2):
  drm/radeon: apply more strict limits for PLL params v2
  drm/radeon: improve PLL params if we don't match exactly v2
rings a bell for me, because I believe someone somewhere was saying that a 
kernel parameter
speaking of PLL was fixing the problem... but people did not find PLL 
parameters for radeon,
so people did not follow about that comment.

From:
https://www.x.org/releases/current/doc/man/man4/radeon.4.xhtml
I see:
Option "LVDSProbePLL" "boolean"
When BIOS panel information isn’t available (like on PowerBooks), it may still 
be necessary to
use the firmware-provided PLL values for the panel or flickering will happen. 
This option will
force probing of the current value programmed in the chip when X is launched in 
that case.
This is only useful for LVDS panels (laptop internal panels). The default is on.
Also:
Option "DefaultTMDSPLL" "boolean"
Use the default driver provided TMDS PLL values rather than the ones provided 
by the BIOS.
This option has no effect on Mac cards.
Enable this option if you are having problems with a DVI monitor using the 
internal TMDS controller.
The default is off.

Also:
  drm/radeon: update CI DPM powertune settings
ring an other bell, because I think I remember someone saying something about 
DPM in some message.
Sorry for not being more specific.

A similar, older fixed closed bug:
https://bugzilla.kernel.org/show_bug.cgi?id=26552

** Bug watch added: Linux Kernel Bug Tracker #26552
   https://bugzilla.kernel.org/show_bug.cgi?id=26552

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https://bugs.launchpad.net/bugs/1791312

Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-04 Thread Paul Dufresne
Ok, I have access at "work" on a Compaq nx9420, for a few days.

linux 3.15.0-rc2 is first one to flickers, but goes to busybox

linux 3.15.0-rc1 does not flickers, but goes to busybox
  I found: mounting /dev/sda1 on /root: invalid argument
  and then initrd not mounting.

previous version, 3.14.79: no flickers, boot to graphics mode

will try to study changes for 3.15.0-rc2

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-02 Thread Werner Lueckel
.. 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 upward. See my table 
above (a little messed-up due to lacking blanks).

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-01 Thread Paul Dufresne
I just retried by installing headers, then reinstall kernel-generic.
This time wifi works.
Note that these packages won't show in Synaptic.
Will show in dpkg -l|grep kernel. Use dpkg -r to remove them.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-01 Thread Paul Dufresne
Well, I tested on my laptop with:
paul@paul-NC210-NC110:~$ cat /proc/version
Linux version 3.14.79-031479-generic (kernel@gloin) (gcc version 4.8.4 (Ubuntu 
4.8.4-2ubuntu1~14.04.3) ) #20160910530 SMP Sun Sep 11 09:41:06 UTC 2016

When I used gdebi to install the kernel .deb, in the details, there were some 
errors.
I believe this was because I did not installed headers .deb before...
I would suggest you install the headers .deb before... but it work even without
the headers .deb.
Also gdebi said version was already installed: I am pretty sure it was not.

I lost my wifi however after rebooting with that version (I plugged Ethernet 
wire for writing
this).

And I am on Linux Mint 19.1.
When I rebooted, it continue to boot with old kernel, and was not showing me 
the menu...
even if I pressed Esc and Shift.

So I edited /etc/default/grub from:
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0

to:
GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=10

but I think this could be needed only on Mint.

after that, advanced options were showing, and I was able to select old
kernel version.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-01 Thread Paul Dufresne
Thanks for trying the tearfree option! (ok, it don't work)

By reading: https://wiki.ubuntu.com/Kernel/MainlineBuilds

I discovered: http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D
which would allow to download prebuild .deb for old mwainline kernels.

I am a bit sceptical if new versions of ubuntu would boot with so old versions.
But it could help someone pinpoint the problem.

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-02-01 Thread Werner Lueckel
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 tested different systems:
System  kernel  radeon.ko  result
UBUNTU-14.04.5  3.13.0-164  2.36.0 O.K
puppy_slacko-6.3.2  3.14.55 2.37.0 O.K.
UBCD3.16.0  2.39.0 FLICKER
UBUNTU 14.04.5  4.4.0-133   2.43.0 FLICKER
UBUNTU 18.04.1  4.15.0-42   2.50.0 FLICKER

So, I think the problem starts with a modification made in radeon.ko
version 2.37.0 --> 2.39.0

Additionally I found a "kind of work-around": switch the mode several times!
thus:
- ignore flickering; start grafic mode
- xrandr --output LVDS --mode 1440x900; sleep 2; xrandr --output LVDS --mode 
1680x1050;
- try that 2 ... 5 times until flickering stops!

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-01-31 Thread Paul Dufresne
Someone said:
"I tried this with a Ubuntu 17.10 and could not boot. I had to use a rescue 
boot and remove the lines again to get it up and running."
from:https://askubuntu.com/questions/794865/16-04-ati-mobility-radeon-x1600-full-resolution-flickering
So, try with care!

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-01-31 Thread Paul Dufresne
I guess I would rather add the two option lines (with same indentation) to:
file:///usr/share/X11/xorg.conf.d/10-radeon.conf

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2019-01-31 Thread Paul Dufresne
The bug have been reported upstream:
https://bugs.freedesktop.org/show_bug.cgi?id=108514

https://forums.linuxmint.com/viewtopic.php?t=229387
suggest the bug could be "fixed" by creating 
/usr/share/X11/xorg.conf.d/20-radeon.conf with:

Section "Device"
Identifier "Radeon"
Driver "radeon"
Option "AccelMethod" "glamor"
Option "TearFree" "on"
EndSection

Someone could try?

** Bug watch added: freedesktop.org Bugzilla #108514
   https://bugs.freedesktop.org/show_bug.cgi?id=108514

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2018-09-17 Thread Werner Lueckel
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 with upstream-kernel 4.19.0-041900rc3 
  -> USUALLY the screen is o.k; BUT SOMETIMES the screen flickers as before
  I found no special reason that may cause/avoid the flickering; just reboot 
and watch ... 
  and if the screen flickers, reboot again and the screen may be o.k. ...

So I replaced the tag "kernel-fixed-upstream" by "kernel-bug-exists-
upstream".

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2018-09-17 Thread Werner Lueckel
** Tags removed: kernel-fixed-upstream
** Tags added: kernel-bug-exists-upstream

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2018-09-15 Thread Werner Lueckel
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

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2018-09-11 Thread Joseph Salisbury
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.19 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc3


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
   Status: Confirmed => Incomplete

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1791312

Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2018-09-09 Thread Werner Lueckel
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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Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1791312] Re: ubuntu 18.04 flickering screen with Radeon X1600

2018-09-08 Thread Werner Lueckel
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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https://bugs.launchpad.net/bugs/1791312

Title:
  ubuntu 18.04 flickering screen with Radeon X1600

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  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) in textmode;
  -> as soon as the kernel-module radeon.ko is loaded the screen starts 
flickering
  when starting the grafic-mode the flickering continues; so the screen is 
unusable.

  when setting the option "radeon.modeset=0" (thus: not use radeon drivers) the 
screen does not flicker
  but the resolution is limited to 1400x1050 (instead of natural 1680x1050)
  so I can not use this as work-around

  when using the old ubuntu 14.04.05 LTS (Kernel 3.13.0-157)
  the screen is o.k. NO flickering in textmode, nice grafic, NO flickering 
  xrandr tells: 1680x1050 60.1

  so I must stay on old ubuntu 14.04.05 ???

To manage notifications about this bug go to:
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