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What Not To Expect From The Linux 2.6.40 Kernel

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  • What Not To Expect From The Linux 2.6.40 Kernel

    Phoronix: What Not To Expect From The Linux 2.6.40 Kernel

    Since the release of the Linux 2.6.39 kernel on Thursday, Linus Torvalds opened the merge window for the Linux 2.6.40 kernel and it will stay open until month's end. While the 2.6.40 kernel will bring several open-source graphics driver improvements (performance improvements, Intel Ivy Bridge support NVIDIA Optimus, etc), new hardware enablement, and other enhancements, there's a few features that you will not find in this next major Linux kernel release...

    http://www.phoronix.com/vr.php?view=OTQ3Mw

  • #2
    Synaptics LED

    I don't understand why the very simple synaptics LED patch by Takashi Iwai has not made it into the kernel. It's been around for ~1 yr now.

    http://pastebin.com/k6n5seqm

    This allows the LED on some clickpads (and maybe normal touchpads) to turn on when disabled. Furthermore with a xf86-input-synaptics patch, you can double tap the LED to toggle the the touchpad on and off.

    This is extremely useful for laptops when you plug in a portable mouse and don't want your typing affected by the touchpad. (Yes I know about syndaemon).

    Comment


    • #3
      Fixing the power consumption bug?

      I mean, fixing this bug to me would be the nicest of all features. Since it's unlikely we will see it fixed in <2.6.39, I consider it to be a "feature" of 2.6.40.

      Besides, why isn't even mentioned on the list?

      Comment


      • #4
        What about

        H264 VA-API acceleration? I hope it will be ready for this kernel

        Comment


        • #5
          I'd like to see zram and zcache as stable. That is, out of staging, and cleancache merged.

          Comment


          • #6
            EFI and radeon DisplayPort enhancements

            * will boot with grub-efi on many more EFI firmwares
            * radeon/kms improved support for DisplayPort.

            so 2.6.40 will provide early support for imac12,2 (2011),
            still not without some hacks

            Comment


            • #7
              Oh yeah, there's the bug I've been following still in .39, reboot/poweroff/sleep all crash on EFI.

              Double whammy, since I was going to buy that netbook. Well, better wait until it can power off :P
              ( https://bugs.launchpad.net/ubuntu/+s...ux/+bug/721576 )

              Comment


              • #8
                What Not To Expect From The Linux 2.6.40 Kernel: Actually viable open-source graphics drivers.

                (I'm just trolling and/or joking, so please ignore me.)

                Comment


                • #9
                  Originally posted by allquixotic View Post
                  What Not To Expect From The Linux 2.6.40 Kernel: Actually viable open-source graphics drivers.

                  (I'm just trolling and/or joking, so please ignore me.)
                  Yes, because it's not the drivers; it's KDE.

                  Comment


                  • #10
                    reiser4

                    "The Reiser4 file-system still has not been proposed for integration into the mainline Linux kernel tree"

                    Who gives a flying ship about reiser4?

                    Comment


                    • #11
                      Originally posted by michal View Post
                      "The Reiser4 file-system still has not been proposed for integration into the mainline Linux kernel tree"

                      Who gives a flying ship about reiser4?
                      i am. do you mind ?

                      Comment


                      • #12
                        With the open-source Radeon kernel driver, there still is not the bits in place yet for implementing Hyper-Z and Radeon HD 5000/6000 series HDMI audio support...
                        Damn. I recall when R700 HDMI audio support was added towards the end of 2009, and when HDMI audio support under KMS was added in 2010. I just assumed that this would carry over to R800 (HD5000), but apparently not.

                        I recently got a couple of HD5450's and although they are not being used in HTPC's, I was looking forward to connecting them to my TV via HDMI occasionally.

                        Is anyone working on this? I can't program, but I might be able to help with testing.

                        Comment


                        • #13
                          HDMI audio broken in 2.6.40?

                          It looks like HDMI audio may be more generally broken in 2.6.40 - see here in FedoraForums http://www.fedoraforum.org/forum/sho...d.php?t=267793 I had pretty much the identical experience to the OP here, specifically:-
                          • No HDMI audio, even though no error messages and PA volume control shows active sound levels in bars. Other sound output devices OK.
                          • Flash video jerky and 2-3 times speeded up. This is with Adobe proprietary x86_64 beta Flash plugin
                          • All MythTV video - file, DVD or live TV (DVB-T) - fast & jerky, same as with Flash plugin. However same video content (file or DVD) plays OK in other applications (Kaffeine, Dragon)...apart from no HDMI audio
                          I am on x86_64. Graphics card is HD 4670 (RV730) with X.Org radeon driver and KMS. However the HDMI audio problem appears to be independent of graphics hardware / driver, and distribution. It is conceivable that the HDMI audio and video playback issues are independant, and just came up together. If I boot into 2.6.38.8-35 everything goes back to normal.

                          There are some reports that the HDMI audio at least is fixed in the very latest kernel versions; however it looks like quite a significant regression.

                          Andrew

                          Comment


                          • #14
                            Originally posted by AndyW View Post
                            It looks like HDMI audio may be more generally broken in 2.6.40 - see here in FedoraForums http://www.fedoraforum.org/forum/sho...d.php?t=267793 I had pretty much the identical experience to the OP here, specifically:-
                            • No HDMI audio, even though no error messages and PA volume control shows active sound levels in bars. Other sound output devices OK.
                            • Flash video jerky and 2-3 times speeded up. This is with Adobe proprietary x86_64 beta Flash plugin
                            • All MythTV video - file, DVD or live TV (DVB-T) - fast & jerky, same as with Flash plugin. However same video content (file or DVD) plays OK in other applications (Kaffeine, Dragon)...apart from no HDMI audio
                            I am on x86_64. Graphics card is HD 4670 (RV730) with X.Org radeon driver and KMS. However the HDMI audio problem appears to be independent of graphics hardware / driver, and distribution. It is conceivable that the HDMI audio and video playback issues are independant, and just came up together. If I boot into 2.6.38.8-35 everything goes back to normal.

                            There are some reports that the HDMI audio at least is fixed in the very latest kernel versions; however it looks like quite a significant regression.
                            Alex disabled audio by default in radeon. Lovely, isn't it?

                            Add "radeon.audio=1" to GRUB.

                            Comment


                            • #15
                              Originally posted by dfx. View Post
                              i am. do you mind ?
                              Why not? It's a killer filesystem. (an oldie but a goodie)

                              Comment

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