Bug 110891
| Summary: | [byt dsi] Wrong PLL on HP Pro Tablet 408 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | ettavolt |
| Component: | Video(DRI - Intel) | Assignee: | intel-gfx-bugs (intel-gfx-bugs) |
| Status: | RESOLVED INVALID | ||
| Severity: | normal | CC: | ettavolt, intel-gfx-bugs |
| Priority: | P1 | ||
| Hardware: | Intel | ||
| OS: | Linux | ||
| Kernel Version: | 4.2.0-24-generic #28~15.10-Ubuntu | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | Log with drm.debug=14 on kernel command line. | ||
BTW, I've got picture on LCD connected to HDMI. 'Displays' applet showed both screens active with native resolution set, but tablet's screen was black. Will it help if I attach log for booting in such configuration? What debug level should I set? Please file new i915 bugs at the freedesktop.org bugzilla https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel Ok. Here is the link if anyone wants to follow: https://bugs.freedesktop.org/show_bug.cgi?id=93744 |
Created attachment 199791 [details] Log with drm.debug=14 on kernel command line. I'm trying to configure Ubuntu 15.10 on HP Pro Tablet 408 G1 (P/N: L3S95AA#ACB if anyone interested). It is based on Z3736F. Currently I'm stuck with problem in i915. It can't determine PLL divider (?). With nomodeset I can get to desktop and then xrandr reports this mode: 800 x 1280 (0x26e) 78.848MHz / 98.56kHz / 77 Hz. In the dmesg.log you can see modified '[drm:vlv_get_dsi_pclk [i915]] *ERROR* wrong m_seed programmed' message, because I thought I could get something useful out of pll_div value. :) Obviously, this was wrong.