Sadly, we can't wait that long, Kai-Heng. This is a patch that is critical to our operation and is causing money to be lost daily on machines we can't sell. There are other OEMs that are affected by this as well.
The aforementioned patch is headed to kernel 5.13, due out in June. If this weren't so time-sensitive, we could have just waited for that kernel or later kernels, such as what will land in 22.04 LTS. Unfortunately, that's a year away, which is an unacceptable wait time. What you're currently asking us to do is wait until July/August for the HWE kernel to get updated prior to 20.04.3's release. That's also an unacceptable wait time as those are sales that we can't make in that time. We've been working with our ODM to try to resolve it from a hardware standpoint, but they're having a tough time accepting it as a defect since it works fine on Windows, so it must be a Linux thing (which is also unacceptable that Linux can even let this happen). So, I guess I'm asking you (or someone else on the kernel team) to do the right thing. As you can see from Mike's post above, the testing we have done is extensive and uses the 5.8 kernel, and even tested on older machines. I understand your reluctance, but we're not simply a user having trouble with their machine, we're a company trying successfully to sell Ubuntu (Kubuntu, in this case) on laptops. We have a partnership with Canonical on this as well as the Kubuntu council as the only OEM allowed to use the Kubuntu name on its products. Basically, "eventually" doesn't work for us, we need this ASAP, hence the "critical" priority. ** Changed in: linux (Ubuntu Bionic) Importance: Undecided => High ** Changed in: linux (Ubuntu Groovy) Importance: Undecided => High ** Changed in: linux (Ubuntu Bionic) Importance: High => Critical -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1925685 Title: [SRU] Patch for flicker and glitching on certain hardware, intel framebuffer, Status in linux package in Ubuntu: Confirmed Status in linux source package in Bionic: Confirmed Status in linux source package in Focal: Confirmed Status in linux source package in Groovy: Confirmed Status in linux source package in Hirsute: Confirmed Bug description: Filing this with my Kubuntu Focus (kfocus.org) OEM hat on: [Impact] We are having screen flickering and glitching issues with some of our hardware upon wake from suspend. We have worked with our ODM to figure out a fix for this. They had reported there were no issues when running Windows on the same hardware. As such, we tested, and found that this issue first began as a regression in kernel 5.0 (did not exist in kernel 4.18 per our tests). We identified a patch via https://gitlab.freedesktop.org/drm/intel/-/issues/272 in which this has been solved. Per our testing by recompiling the kernel, this completely fixes our hardware issue. As of 4-21, this fix has been merged into the Linux kernel per Timo Aaltonen, and will be included in the kernel in the 5.13 release. Our hardware ships with Kubuntu 20.04 LTS, which means the 5.13 kernel will not see these machines, at least in the forseeable future. As such, we request that this patch be added to the kernel. Per our testing, this patch is straightforward to add and works flawlessly. Until this is fixed, we have a whole batch of hardware we cannot sell, so, as an OEM, this is a high priority. [Test Plan] * Install Kubuntu on an affected Kubuntu Focus M2 computer (not in the hands of customers at this time) * Notice screen glitching/flickering after wake-from-suspend. * Install kernel compiled with the attached patch. Boot from patched kernel. * Suspend laptop, resume. No glitches. [Where problems could occur] * Although this solves the problem for us and has been confirmed to work with the Intel developers that developed this patch, it could cause another display type to have problems. This is unlikely as it has been vetted by Intel and by the mainline Linux kernel developers. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1925685/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
