This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- vivid' to 'verification-done-vivid'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-vivid -- 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/1501187 Title: Backport support for ACPI GPIO interrupts for i2c-hid devices Status in HWE Next: New Status in linux package in Ubuntu: Triaged Status in linux source package in Vivid: Fix Committed Bug description: [Impact] On some platforms HID over I2C uses GPIO interrupts instead of directly connected to the IO-APIC. Without ACPI GPIO interrupts support, i2c-hid can not find IRQ when probing the device, and shows the following message: i2c_hid i2c-SYNA7508:00: Could not register for SYNA7508:00 interrupt, irq = -1, ret = -22 i2c_hid: probe of i2c-SYNA7508:00 failed with error -22 So far we've found this issue on some SKL platforms, and one BSW platform. [Fix] There's a fix in mainline v4.1-rc1, which add the support for ACPI GPIO interrupts for i2c-hid module. Commit log is as follows: commit a485923efbb83056b7fb79e4fd2fee05c990ad5e Author: Mika Westerberg <mika.westerb...@linux.intel.com> Commit: Jiri Kosina <jkos...@suse.cz> CommitDate: Tue Feb 24 20:53:30 2015 +0100 HID: i2c-hid: Add support for ACPI GPIO interrupts [Test] 1. Boot with 4.1-rc1 kernel and patched 3.19 kernel 2. Both touchscreen should work To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1501187/+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
