Bug 1564715
Summary: | Touchscreen on Dell Inspiron 7548 stopped working | ||
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Product: | [Fedora] Fedora | Reporter: | Andrej Podzimek <andrej> |
Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
Status: | CLOSED NOTABUG | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | unspecified | Docs Contact: | |
Priority: | unspecified | ||
Version: | 28 | CC: | airlied, andrej, bskeggs, ewk, hdegoede, ichavero, itamar, jarodwilson, jglisse, john.j5live, jonathan, josef, kernel-maint, linville, mchehab, mjg59, steved |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | If docs needed, set a value | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2018-04-10 15:25:06 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Andrej Podzimek
2018-04-07 01:01:23 UTC
FTR, here's some interesting stuff. https://www.spinics.net/lists/linux-usb/msg103619.html But it looks like the quirks mentioned there are already enabled for all elan touchscreens anyway. The problem is that the quirks can't really take effect when the device doesn't get initialized at all, i.e., its vendor and model IDs aren't known to the HID driver at all at the point when it fails to initialize. I've just tried this on the kernel command line: usbcore.use_both_schemes=1 usbcore.old_scheme_first=1 usbcore.initial_descriptor_timeout=60000 Sadly, still no touchscreen. This turned out to be a real hardware problem. The power wire is broken and contact can be restored temporarily by pressing against the rear side of the laptop lid, leading to a successful initialization of the ELAN touchscreen (until the next laptop lid position change). So it's a case for a repair shop, not a software issue. |