Linux 5.4-rc8 Released - Things Are Calm For Linux 5.4's Debut Next Week

[phoronix]

Phoronix: Linux 5.4-rc8 Released - Things Are Calm For Linux 5.4's Debut Next Week

As expected, Linus Torvalds opted for doing a 5.4-rc8 kernel release today rather than going straight to Linux 5.4 stable. However, he says he could have just as well done the stable kernel release thanks to the cycle settling down...

http://www.phoronix.com/scan.php?page=news_item&px=Linux-5.4-rc8-Released

[shmerl]

Quite important fix for Navi is still pending: https://cgit.freedesktop.org/~agd5f/...b7a39a19a314fa

[DarkFoss]

I tried Ubuntu's mainline rc7 and it wasn't bad. It's a shame they still have freesync disabled. Last kernel it worked was 5.0rc2 lol maybe in 2020 they will decide otherwise.

[shmerl]

I tried Ubuntu's mainline rc7 and it wasn't bad. It's a shame they still have freesync disabled. Last kernel it worked was 5.0rc2 lol maybe in 2020 they will decide otherwise.

Adaptive sync works fine with 5.4 if you build it yourself. You can enable it in /usr/share/X11/xorg.conf.d/10-amdgpu.conf

Mine looks like this:

Section "OutputClass"
    Identifier "AMDgpu"
    MatchDriver "amdgpu"
    Driver "amdgpu"
    Option "VariableRefresh" "true"
EndSection

[ernstp]

I tried Ubuntu's mainline rc7 and it wasn't bad. It's a shame they still have freesync disabled. Last kernel it worked was 5.0rc2 lol maybe in 2020 they will decide otherwise.

It's not disabled, should work fine! AFAIK there's no kernel config to disable it...

[pyler]

Does Linus actually care about kernel perf regressions found by Phoronix?

[DarkFoss]

Adaptive sync works fine with 5.4 if you build it yourself. You can enable it in /usr/share/X11/xorg.conf.d/10-amdgpu.conf

Mine looks like this:

Section "OutputClass"
Identifier "AMDgpu"
MatchDriver "amdgpu"
Driver "amdgpu"
Option "VariableRefresh" "true"
EndSection

Thanks shmerl I have something similar when I followed debianxfce's directions awhile back and added 10-freesync.conf to the location you specify only I used "on" instead of true. It works fine with MBab's kernel or Ubuntu's mainline 5.0_rc2. I can enable freesync via a terminal with DISPLAY=:0 xrandr --output DisplayPort-0 --set "freesync" 1 and it works. The issue is with Ubuntu"s kernels after 5.0_rc2 it does not matter if its the drm-tip daily or the current mainline through 5.4_rc7. I'm going to download rc8 for grins and show what is missing by running DISPLAY=:0 xrandr --prop. Here's what it looks like when working properly.

DISPLAY=:0 xrandr --prop
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
DisplayPort-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 519mm x 293mm
       EDID:  
               00ffffffffffff0004722a0654031084
               291c0104a5341e783bdcf1a655519d26
               0e5054bfef8081c08140818090409500
               a940b300a9c0fb7e8088703812401820
               350007252100001e000000ff00544244
               4141303032333930300a000000fd0030
               90b4b422010a202020202020000000fc
               004544323432515220410a20202001a4
               020323f150010304050790121314161f
               2021223f40230907078301000065030c
               001000fe5b80a0703835403020350056
               502100001e866f80a070384040302035
               0056502100001e023a801871382d4058
               2c350056502100001e8c0ad08a20e02d
               10103e9600565021000018011d007251
               d01e206e28550056502100001e000083
       GAMMA_LUT_SIZE: 4096  
               range: (0, -1)
       DEGAMMA_LUT_SIZE: 4096  
               range: (0, -1)
       GAMMA_LUT: 0  
               range: (0, 65535)
       CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0  
               0 1  
       DEGAMMA_LUT: 0  
               range: (0, 65535)
       TearFree: auto  
               supported: off, on, auto
       [B]freesync_capable: 1  
               range: (0, 1)
       freesync: 1  
               range: (0, 1)[/B]
       vrr_capable: 1  
               range: (0, 1)
       max bpc: 8  
               range: (8, 16)
       underscan vborder: 0  
               range: (0, 128)
       underscan hborder: 0  
               range: (0, 128)
       underscan: off  
               supported: off, on, auto
       scaling mode: None  
               supported: None, Full, Center, Full aspect
       link-status: Good  
               supported: Good, Bad
       CONNECTOR_ID: 60  
               supported: 60
       non-desktop: 0  
               range: (0, 1)
  1920x1080    144.00*+ 120.00   100.00   119.88   119.98    99.93    60.00    60.00    50.00    59.94    30.00    25.00    24.00    29.97    23.98  
  1600x1200     60.00  
  1680x1050     59.95  
  1400x1050     59.98  
  1600x900      60.00  
  1280x1024     75.02    60.02  
  1440x900      59.89  
  1280x960      60.00  
  1280x800     144.00  
  1152x864      75.00  
  1280x720      60.00    50.00    59.94  
  1024x768      75.03    70.07    60.00  
  832x624       74.55  
  800x600       72.19    75.00    60.32    56.25  
  720x576       50.00  
  720x480       60.00    59.94  
  640x480       75.00    72.81    66.67    60.00    59.94  
  720x400       70.08

[DarkFoss]

ernstp Heres what every kernel since the one I mentioned above looks like. And your righ it's disabled some where in their secret sauce they add to the kernels not in the kernel conf itself. Thats how they had radv disabled for all of 17.03 and 17.10 now it's freesync for 10 months and counting.
:~$

DISPLAY=:0 xrandr --prop
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
DisplayPort-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 519mm x 293mm
        EDID:
                00ffffffffffff0004722a0654031084
                291c0104a5341e783bdcf1a655519d26
                0e5054bfef8081c08140818090409500
                a940b300a9c0fb7e8088703812401820
                350007252100001e000000ff00544244
                4141303032333930300a000000fd0030
                90b4b422010a202020202020000000fc
                004544323432515220410a20202001a4
                020323f150010304050790121314161f
                2021223f40230907078301000065030c
                001000fe5b80a0703835403020350056
                502100001e866f80a070384040302035
                0056502100001e023a801871382d4058
                2c350056502100001e8c0ad08a20e02d
                10103e9600565021000018011d007251
                d01e206e28550056502100001e000083
        GAMMA_LUT_SIZE: 4096
                range: (0, -1)
        DEGAMMA_LUT_SIZE: 4096
                range: (0, -1)
        GAMMA_LUT: 0
                range: (0, 65535)
        CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
                0 1
        DEGAMMA_LUT: 0
                range: (0, 65535)
        TearFree: auto
                supported: off, on, auto
        vrr_capable: 1
                range: (0, 1)
        max bpc: 8
                range: (8, 16)
        underscan vborder: 0
                range: (0, 128)
        underscan hborder: 0
                range: (0, 128)
        underscan: off
                supported: off, on, auto
        scaling mode: None
                supported: None, Full, Center, Full aspect
        link-status: Good
                supported: Good, Bad
        CONNECTOR_ID: 59
                supported: 59
        non-desktop: 0
                range: (0, 1)
   1920x1080    144.00*+ 120.00   100.00   119.88   119.98    99.93    60.00    60.00    50.00    59.94    30.00    25.00    24.00    29.97    23.98  
   1600x1200     60.00  
   1680x1050     59.95  
   1400x1050     59.98  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x960      60.00  
   1280x800     144.00  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08

What is missing between the 2 is any reference to freesync no option to toggle it on or off

[ernstp]

ernstp Heres what every kernel since the one I mentioned above looks like. And your righ it's disabled some where in their secret sauce they add to the kernels not in the kernel conf itself. Thats how they had radv disabled for all of 17.03 and 17.10 now it's freesync for 10 months and counting.
What is missing between the 2 is any reference to freesync no option to toggle it on or off

Enough with the conspiracies, they're not touching anything. You can see for yourself what patches they apply, it's right there in the top: https://kernel.ubuntu.com/~kernel-pp...line/v5.4-rc8/

However AMD changed around the interface for Freesync quite a lot and it was a bit hard to keep track of. You just need the xorg.conf stuff and vrr_capable: 1 , it will work.

[shmerl]

Yep, I don't have such "freesync_capable", only "vrr_capable" and it works just fine. I also don't need to enable anything with xrandr, only to set AMDgpu setting in xorg configuration like above.